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Finding the Fourth Proportional to 112,776.56, 155,624.92 and 62,471.92

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Solution

The fourth proportional to 112,776.56, 155,624.92 and 62,471.92 is: 86,207.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,776.56 : 155,624.92 = 62,471.92 : x
  2. Step 2: Convert to fraction form
    112,776.56/155,624.92 = 62,471.92/x
  3. Step 3: Cross multiply
    112,776.56x = 155,624.92 × 62,471.92
  4. Step 4: Simplify right side
    112,776.56x = 9,722,187,552.25
  5. Step 5: Solve for x
    x = 9,722,187,552.25/112,776.56
  6. Step 6: Final answer
    x = 86,207.52

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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.