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Finding the Fourth Proportional to 425,247.52, 638,026.80 and 144,793.12

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Solution

The fourth proportional to 425,247.52, 638,026.80 and 144,793.12 is: 217,242.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,247.52 : 638,026.80 = 144,793.12 : x
  2. Step 2: Convert to fraction form
    425,247.52/638,026.80 = 144,793.12/x
  3. Step 3: Cross multiply
    425,247.52x = 638,026.80 × 144,793.12
  4. Step 4: Simplify right side
    425,247.52x = 92,381,891,015.62
  5. Step 5: Solve for x
    x = 92,381,891,015.62/425,247.52
  6. Step 6: Final answer
    x = 217,242.63

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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.