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Finding the Fourth Proportional to 8,472.47, 11,665.91 and 7,526.61

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Solution

The fourth proportional to 8,472.47, 11,665.91 and 7,526.61 is: 10,363.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.47 : 11,665.91 = 7,526.61 : x
  2. Step 2: Convert to fraction form
    8,472.47/11,665.91 = 7,526.61/x
  3. Step 3: Cross multiply
    8,472.47x = 11,665.91 × 7,526.61
  4. Step 4: Simplify right side
    8,472.47x = 87,804,773.68
  5. Step 5: Solve for x
    x = 87,804,773.68/8,472.47
  6. Step 6: Final answer
    x = 10,363.55

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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.