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Finding the Fourth Proportional to 8,565.90, 12,850.90 and 2,722.52

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Solution

The fourth proportional to 8,565.90, 12,850.90 and 2,722.52 is: 4,084.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565.90 : 12,850.90 = 2,722.52 : x
  2. Step 2: Convert to fraction form
    8,565.90/12,850.90 = 2,722.52/x
  3. Step 3: Cross multiply
    8,565.90x = 12,850.90 × 2,722.52
  4. Step 4: Simplify right side
    8,565.90x = 34,986,818.66
  5. Step 5: Solve for x
    x = 34,986,818.66/8,565.90
  6. Step 6: Final answer
    x = 4,084.43

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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.