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Finding the Fourth Proportional to 159,506.80, 239,124.30 and 70,711.90

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Solution

The fourth proportional to 159,506.80, 239,124.30 and 70,711.90 is: 106,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,506.80 : 239,124.30 = 70,711.90 : x
  2. Step 2: Convert to fraction form
    159,506.80/239,124.30 = 70,711.90/x
  3. Step 3: Cross multiply
    159,506.80x = 239,124.30 × 70,711.90
  4. Step 4: Simplify right side
    159,506.80x = 16,908,933,589.17
  5. Step 5: Solve for x
    x = 16,908,933,589.17/159,506.80
  6. Step 6: Final answer
    x = 106,007.60

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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.