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Finding the Fourth Proportional to 129,105.79, 193,702.43 and 65,952.52

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Solution

The fourth proportional to 129,105.79, 193,702.43 and 65,952.52 is: 98,951.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,105.79 : 193,702.43 = 65,952.52 : x
  2. Step 2: Convert to fraction form
    129,105.79/193,702.43 = 65,952.52/x
  3. Step 3: Cross multiply
    129,105.79x = 193,702.43 × 65,952.52
  4. Step 4: Simplify right side
    129,105.79x = 12,775,163,388.62
  5. Step 5: Solve for x
    x = 12,775,163,388.62/129,105.79
  6. Step 6: Final answer
    x = 98,951.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.