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Finding the Fourth Proportional to 71,762,908.80, 107,644,363.20 and 26,318,798.40

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Solution

The fourth proportional to 71,762,908.80, 107,644,363.20 and 26,318,798.40 is: 39,478,197.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,762,908.80 : 107,644,363.20 = 26,318,798.40 : x
  2. Step 2: Convert to fraction form
    71,762,908.80/107,644,363.20 = 26,318,798.40/x
  3. Step 3: Cross multiply
    71,762,908.80x = 107,644,363.20 × 26,318,798.40
  4. Step 4: Simplify right side
    71,762,908.80x = 2,833,070,293,957,179
  5. Step 5: Solve for x
    x = 2,833,070,293,957,179/71,762,908.80
  6. Step 6: Final answer
    x = 39,478,197.60

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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.