Home / 78,417,080,147.70-117,625,620,221.55-19,529,165,819.70

Finding the Fourth Proportional to 78,417,080,147.70, 117,625,620,221.55 and 19,529,165,819.70

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Solution

The fourth proportional to 78,417,080,147.70, 117,625,620,221.55 and 19,529,165,819.70 is: 29,293,748,729.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,417,080,147.70 : 117,625,620,221.55 = 19,529,165,819.70 : x
  2. Step 2: Convert to fraction form
    78,417,080,147.70/117,625,620,221.55 = 19,529,165,819.70/x
  3. Step 3: Cross multiply
    78,417,080,147.70x = 117,625,620,221.55 × 19,529,165,819.70
  4. Step 4: Simplify right side
    78,417,080,147.70x = 2,297,130,241,951,707,430,912
  5. Step 5: Solve for x
    x = 2,297,130,241,951,707,430,912/78,417,080,147.70
  6. Step 6: Final answer
    x = 29,293,748,729.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.