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Finding the Fourth Proportional to 8,957.97, 12,363.17 and 5,421.24

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Solution

The fourth proportional to 8,957.97, 12,363.17 and 5,421.24 is: 7,482.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.97 : 12,363.17 = 5,421.24 : x
  2. Step 2: Convert to fraction form
    8,957.97/12,363.17 = 5,421.24/x
  3. Step 3: Cross multiply
    8,957.97x = 12,363.17 × 5,421.24
  4. Step 4: Simplify right side
    8,957.97x = 67,023,684.62
  5. Step 5: Solve for x
    x = 67,023,684.62/8,957.97
  6. Step 6: Final answer
    x = 7,482.02

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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.