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Finding the Fourth Proportional to 8,755.20, 12,066.96 and 7,511.04

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Solution

The fourth proportional to 8,755.20, 12,066.96 and 7,511.04 is: 10,352.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.20 : 12,066.96 = 7,511.04 : x
  2. Step 2: Convert to fraction form
    8,755.20/12,066.96 = 7,511.04/x
  3. Step 3: Cross multiply
    8,755.20x = 12,066.96 × 7,511.04
  4. Step 4: Simplify right side
    8,755.20x = 90,635,419.24
  5. Step 5: Solve for x
    x = 90,635,419.24/8,755.20
  6. Step 6: Final answer
    x = 10,352.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.