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Finding the Fourth Proportional to 8,624.88, 12,920.31 and 8,017.38

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Solution

The fourth proportional to 8,624.88, 12,920.31 and 8,017.38 is: 12,010.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.88 : 12,920.31 = 8,017.38 : x
  2. Step 2: Convert to fraction form
    8,624.88/12,920.31 = 8,017.38/x
  3. Step 3: Cross multiply
    8,624.88x = 12,920.31 × 8,017.38
  4. Step 4: Simplify right side
    8,624.88x = 103,587,034.99
  5. Step 5: Solve for x
    x = 103,587,034.99/8,624.88
  6. Step 6: Final answer
    x = 12,010.26

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1.5x scale

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.