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Finding the Fourth Proportional to 71,601.32, 98,811.18 and 39,773.18

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Solution

The fourth proportional to 71,601.32, 98,811.18 and 39,773.18 is: 54,887.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,601.32 : 98,811.18 = 39,773.18 : x
  2. Step 2: Convert to fraction form
    71,601.32/98,811.18 = 39,773.18/x
  3. Step 3: Cross multiply
    71,601.32x = 98,811.18 × 39,773.18
  4. Step 4: Simplify right side
    71,601.32x = 3,930,034,848.15
  5. Step 5: Solve for x
    x = 3,930,034,848.15/71,601.32
  6. Step 6: Final answer
    x = 54,887.74

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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.