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Finding the Fourth Proportional to 93,978.92, 129,678.96 and 53,695.29

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Solution

The fourth proportional to 93,978.92, 129,678.96 and 53,695.29 is: 74,092.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,978.92 : 129,678.96 = 53,695.29 : x
  2. Step 2: Convert to fraction form
    93,978.92/129,678.96 = 53,695.29/x
  3. Step 3: Cross multiply
    93,978.92x = 129,678.96 × 53,695.29
  4. Step 4: Simplify right side
    93,978.92x = 6,963,149,793.88
  5. Step 5: Solve for x
    x = 6,963,149,793.88/93,978.92
  6. Step 6: Final answer
    x = 74,092.68

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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.