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Finding the Fourth Proportional to 62,491.92, 86,279.09 and 55,765.98

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Solution

The fourth proportional to 62,491.92, 86,279.09 and 55,765.98 is: 76,992.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,491.92 : 86,279.09 = 55,765.98 : x
  2. Step 2: Convert to fraction form
    62,491.92/86,279.09 = 55,765.98/x
  3. Step 3: Cross multiply
    62,491.92x = 86,279.09 × 55,765.98
  4. Step 4: Simplify right side
    62,491.92x = 4,811,437,728.53
  5. Step 5: Solve for x
    x = 4,811,437,728.53/62,491.92
  6. Step 6: Final answer
    x = 76,992.96

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1.5x scale

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.