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Finding the Fourth Proportional to 65,717.92, 90,657.04 and 44,489.76

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Solution

The fourth proportional to 65,717.92, 90,657.04 and 44,489.76 is: 61,373.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,717.92 : 90,657.04 = 44,489.76 : x
  2. Step 2: Convert to fraction form
    65,717.92/90,657.04 = 44,489.76/x
  3. Step 3: Cross multiply
    65,717.92x = 90,657.04 × 44,489.76
  4. Step 4: Simplify right side
    65,717.92x = 4,033,309,951.91
  5. Step 5: Solve for x
    x = 4,033,309,951.91/65,717.92
  6. Step 6: Final answer
    x = 61,373.06

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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.