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Finding the Fourth Proportional to 128,562.92, 192,968.76 and 62,049.87

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Solution

The fourth proportional to 128,562.92, 192,968.76 and 62,049.87 is: 93,134.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,562.92 : 192,968.76 = 62,049.87 : x
  2. Step 2: Convert to fraction form
    128,562.92/192,968.76 = 62,049.87/x
  3. Step 3: Cross multiply
    128,562.92x = 192,968.76 × 62,049.87
  4. Step 4: Simplify right side
    128,562.92x = 11,973,686,472.06
  5. Step 5: Solve for x
    x = 11,973,686,472.06/128,562.92
  6. Step 6: Final answer
    x = 93,134.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.