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Finding the Fourth Proportional to 129,866.10, 194,799.15 and 124,617.30

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Solution

The fourth proportional to 129,866.10, 194,799.15 and 124,617.30 is: 186,925.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,866.10 : 194,799.15 = 124,617.30 : x
  2. Step 2: Convert to fraction form
    129,866.10/194,799.15 = 124,617.30/x
  3. Step 3: Cross multiply
    129,866.10x = 194,799.15 × 124,617.30
  4. Step 4: Simplify right side
    129,866.10x = 24,275,344,115.30
  5. Step 5: Solve for x
    x = 24,275,344,115.30/129,866.10
  6. Step 6: Final answer
    x = 186,925.95

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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.