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Finding the Fourth Proportional to 8,760.68, 12,089.84 and 5,225.92

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Solution

The fourth proportional to 8,760.68, 12,089.84 and 5,225.92 is: 7,211.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760.68 : 12,089.84 = 5,225.92 : x
  2. Step 2: Convert to fraction form
    8,760.68/12,089.84 = 5,225.92/x
  3. Step 3: Cross multiply
    8,760.68x = 12,089.84 × 5,225.92
  4. Step 4: Simplify right side
    8,760.68x = 63,180,536.65
  5. Step 5: Solve for x
    x = 63,180,536.65/8,760.68
  6. Step 6: Final answer
    x = 7,211.83

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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.