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Finding the Fourth Proportional to 531,854.04, 733,957.56 and 290,136.55

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Solution

The fourth proportional to 531,854.04, 733,957.56 and 290,136.55 is: 400,387.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,854.04 : 733,957.56 = 290,136.55 : x
  2. Step 2: Convert to fraction form
    531,854.04/733,957.56 = 290,136.55/x
  3. Step 3: Cross multiply
    531,854.04x = 733,957.56 × 290,136.55
  4. Step 4: Simplify right side
    531,854.04x = 212,947,910,635.03
  5. Step 5: Solve for x
    x = 212,947,910,635.03/531,854.04
  6. Step 6: Final answer
    x = 400,387.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.