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Finding the Fourth Proportional to 9,167.97, 12,652.47 and 5,135.16

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Solution

The fourth proportional to 9,167.97, 12,652.47 and 5,135.16 is: 7,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,167.97 : 12,652.47 = 5,135.16 : x
  2. Step 2: Convert to fraction form
    9,167.97/12,652.47 = 5,135.16/x
  3. Step 3: Cross multiply
    9,167.97x = 12,652.47 × 5,135.16
  4. Step 4: Simplify right side
    9,167.97x = 64,972,457.85
  5. Step 5: Solve for x
    x = 64,972,457.85/9,167.97
  6. Step 6: Final answer
    x = 7,086.90

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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.