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Finding the Fourth Proportional to 9,167.73, 12,650.90 and 5,189.28

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Solution

The fourth proportional to 9,167.73, 12,650.90 and 5,189.28 is: 7,160.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,167.73 : 12,650.90 = 5,189.28 : x
  2. Step 2: Convert to fraction form
    9,167.73/12,650.90 = 5,189.28/x
  3. Step 3: Cross multiply
    9,167.73x = 12,650.90 × 5,189.28
  4. Step 4: Simplify right side
    9,167.73x = 65,649,036.41
  5. Step 5: Solve for x
    x = 65,649,036.41/9,167.73
  6. Step 6: Final answer
    x = 7,160.88

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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.