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Finding the Fourth Proportional to 118,717.92, 163,830.76 and 65,002.96

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Solution

The fourth proportional to 118,717.92, 163,830.76 and 65,002.96 is: 89,704.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,717.92 : 163,830.76 = 65,002.96 : x
  2. Step 2: Convert to fraction form
    118,717.92/163,830.76 = 65,002.96/x
  3. Step 3: Cross multiply
    118,717.92x = 163,830.76 × 65,002.96
  4. Step 4: Simplify right side
    118,717.92x = 10,649,484,339.05
  5. Step 5: Solve for x
    x = 10,649,484,339.05/118,717.92
  6. Step 6: Final answer
    x = 89,704.10

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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.