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Finding the Fourth Proportional to 144,872.40, 217,049.40 and 124,136.40

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Solution

The fourth proportional to 144,872.40, 217,049.40 and 124,136.40 is: 185,982.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,872.40 : 217,049.40 = 124,136.40 : x
  2. Step 2: Convert to fraction form
    144,872.40/217,049.40 = 124,136.40/x
  3. Step 3: Cross multiply
    144,872.40x = 217,049.40 × 124,136.40
  4. Step 4: Simplify right side
    144,872.40x = 26,943,731,138.16
  5. Step 5: Solve for x
    x = 26,943,731,138.16/144,872.40
  6. Step 6: Final answer
    x = 185,982.50

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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.