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Finding the Fourth Proportional to 8,474.28, 12,695.58 and 7,559.16

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Solution

The fourth proportional to 8,474.28, 12,695.58 and 7,559.16 is: 11,324.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.28 : 12,695.58 = 7,559.16 : x
  2. Step 2: Convert to fraction form
    8,474.28/12,695.58 = 7,559.16/x
  3. Step 3: Cross multiply
    8,474.28x = 12,695.58 × 7,559.16
  4. Step 4: Simplify right side
    8,474.28x = 95,967,920.51
  5. Step 5: Solve for x
    x = 95,967,920.51/8,474.28
  6. Step 6: Final answer
    x = 11,324.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.