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Finding the Fourth Proportional to 8,607.48, 11,866.92 and 7,732.68

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Solution

The fourth proportional to 8,607.48, 11,866.92 and 7,732.68 is: 10,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.48 : 11,866.92 = 7,732.68 : x
  2. Step 2: Convert to fraction form
    8,607.48/11,866.92 = 7,732.68/x
  3. Step 3: Cross multiply
    8,607.48x = 11,866.92 × 7,732.68
  4. Step 4: Simplify right side
    8,607.48x = 91,763,094.95
  5. Step 5: Solve for x
    x = 91,763,094.95/8,607.48
  6. Step 6: Final answer
    x = 10,660.85

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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.