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Finding the Fourth Proportional to 93,861, 129,508.02 and 55,632.51

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Solution

The fourth proportional to 93,861, 129,508.02 and 55,632.51 is: 76,760.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,861 : 129,508.02 = 55,632.51 : x
  2. Step 2: Convert to fraction form
    93,861/129,508.02 = 55,632.51/x
  3. Step 3: Cross multiply
    93,861x = 129,508.02 × 55,632.51
  4. Step 4: Simplify right side
    93,861x = 7,204,856,217.73
  5. Step 5: Solve for x
    x = 7,204,856,217.73/93,861
  6. Step 6: Final answer
    x = 76,760.91

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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.