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Finding the Fourth Proportional to 136,757.91, 205,207.92 and 103,468.11

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Solution

The fourth proportional to 136,757.91, 205,207.92 and 103,468.11 is: 155,255.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,757.91 : 205,207.92 = 103,468.11 : x
  2. Step 2: Convert to fraction form
    136,757.91/205,207.92 = 103,468.11/x
  3. Step 3: Cross multiply
    136,757.91x = 205,207.92 × 103,468.11
  4. Step 4: Simplify right side
    136,757.91x = 21,232,475,639.43
  5. Step 5: Solve for x
    x = 21,232,475,639.43/136,757.91
  6. Step 6: Final answer
    x = 155,255.92

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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.