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Finding the Fourth Proportional to 115,881.81, 173,702.85 and 65,854.17

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Solution

The fourth proportional to 115,881.81, 173,702.85 and 65,854.17 is: 98,713.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,881.81 : 173,702.85 = 65,854.17 : x
  2. Step 2: Convert to fraction form
    115,881.81/173,702.85 = 65,854.17/x
  3. Step 3: Cross multiply
    115,881.81x = 173,702.85 × 65,854.17
  4. Step 4: Simplify right side
    115,881.81x = 11,439,057,013.38
  5. Step 5: Solve for x
    x = 11,439,057,013.38/115,881.81
  6. Step 6: Final answer
    x = 98,713.14

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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.