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Finding the Fourth Proportional to 93,940.53, 129,654.37 and 71,354.28

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Solution

The fourth proportional to 93,940.53, 129,654.37 and 71,354.28 is: 98,481.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,940.53 : 129,654.37 = 71,354.28 : x
  2. Step 2: Convert to fraction form
    93,940.53/129,654.37 = 71,354.28/x
  3. Step 3: Cross multiply
    93,940.53x = 129,654.37 × 71,354.28
  4. Step 4: Simplify right side
    93,940.53x = 9,251,394,220.20
  5. Step 5: Solve for x
    x = 9,251,394,220.20/93,940.53
  6. Step 6: Final answer
    x = 98,481.39

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1.5x scale

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.