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Finding the Fourth Proportional to 79,829,519.60, 119,744,279.40 and 71,751,616.40

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Solution

The fourth proportional to 79,829,519.60, 119,744,279.40 and 71,751,616.40 is: 107,627,424.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,829,519.60 : 119,744,279.40 = 71,751,616.40 : x
  2. Step 2: Convert to fraction form
    79,829,519.60/119,744,279.40 = 71,751,616.40/x
  3. Step 3: Cross multiply
    79,829,519.60x = 119,744,279.40 × 71,751,616.40
  4. Step 4: Simplify right side
    79,829,519.60x = 8,591,845,601,603,223
  5. Step 5: Solve for x
    x = 8,591,845,601,603,223/79,829,519.60
  6. Step 6: Final answer
    x = 107,627,424.60

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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.