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Finding the Fourth Proportional to 159,617.90, 239,426.85 and 103,630.70

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Solution

The fourth proportional to 159,617.90, 239,426.85 and 103,630.70 is: 155,446.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,617.90 : 239,426.85 = 103,630.70 : x
  2. Step 2: Convert to fraction form
    159,617.90/239,426.85 = 103,630.70/x
  3. Step 3: Cross multiply
    159,617.90x = 239,426.85 × 103,630.70
  4. Step 4: Simplify right side
    159,617.90x = 24,811,972,064.30
  5. Step 5: Solve for x
    x = 24,811,972,064.30/159,617.90
  6. Step 6: Final answer
    x = 155,446.05

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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.