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Finding the Fourth Proportional to 144,620.40, 217,060.20 and 124,921.20

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Solution

The fourth proportional to 144,620.40, 217,060.20 and 124,921.20 is: 187,493.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,620.40 : 217,060.20 = 124,921.20 : x
  2. Step 2: Convert to fraction form
    144,620.40/217,060.20 = 124,921.20/x
  3. Step 3: Cross multiply
    144,620.40x = 217,060.20 × 124,921.20
  4. Step 4: Simplify right side
    144,620.40x = 27,115,420,656.24
  5. Step 5: Solve for x
    x = 27,115,420,656.24/144,620.40
  6. Step 6: Final answer
    x = 187,493.75

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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.