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Finding the Fourth Proportional to 93,981.42, 129,693.15 and 53,694.87

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Solution

The fourth proportional to 93,981.42, 129,693.15 and 53,694.87 is: 74,098.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,981.42 : 129,693.15 = 53,694.87 : x
  2. Step 2: Convert to fraction form
    93,981.42/129,693.15 = 53,694.87/x
  3. Step 3: Cross multiply
    93,981.42x = 129,693.15 × 53,694.87
  4. Step 4: Simplify right side
    93,981.42x = 6,963,856,829.14
  5. Step 5: Solve for x
    x = 6,963,856,829.14/93,981.42
  6. Step 6: Final answer
    x = 74,098.23

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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.