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Finding the Fourth Proportional to 61,190,170.90, 85,817,404.70 and 61,190,170.90

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Solution

The fourth proportional to 61,190,170.90, 85,817,404.70 and 61,190,170.90 is: 85,817,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,190,170.90 : 85,817,404.70 = 61,190,170.90 : x
  2. Step 2: Convert to fraction form
    61,190,170.90/85,817,404.70 = 61,190,170.90/x
  3. Step 3: Cross multiply
    61,190,170.90x = 85,817,404.70 × 61,190,170.90
  4. Step 4: Simplify right side
    61,190,170.90x = 5,251,181,659,787,463
  5. Step 5: Solve for x
    x = 5,251,181,659,787,463/61,190,170.90
  6. Step 6: Final answer
    x = 85,817,404.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.