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Finding the Fourth Proportional to 159,626.90, 239,440.35 and 103,639.70

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Solution

The fourth proportional to 159,626.90, 239,440.35 and 103,639.70 is: 155,459.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,626.90 : 239,440.35 = 103,639.70 : x
  2. Step 2: Convert to fraction form
    159,626.90/239,440.35 = 103,639.70/x
  3. Step 3: Cross multiply
    159,626.90x = 239,440.35 × 103,639.70
  4. Step 4: Simplify right side
    159,626.90x = 24,815,526,041.90
  5. Step 5: Solve for x
    x = 24,815,526,041.90/159,626.90
  6. Step 6: Final answer
    x = 155,459.55

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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.