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Finding the Fourth Proportional to 8,992.22, 12,411.90 and 5,217.14

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Solution

The fourth proportional to 8,992.22, 12,411.90 and 5,217.14 is: 7,201.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.22 : 12,411.90 = 5,217.14 : x
  2. Step 2: Convert to fraction form
    8,992.22/12,411.90 = 5,217.14/x
  3. Step 3: Cross multiply
    8,992.22x = 12,411.90 × 5,217.14
  4. Step 4: Simplify right side
    8,992.22x = 64,754,651.00
  5. Step 5: Solve for x
    x = 64,754,651.00/8,992.22
  6. Step 6: Final answer
    x = 7,201.19

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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.