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Finding the Fourth Proportional to 8,660.55, 12,981.51 and 3,732.51

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Solution

The fourth proportional to 8,660.55, 12,981.51 and 3,732.51 is: 5,594.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.55 : 12,981.51 = 3,732.51 : x
  2. Step 2: Convert to fraction form
    8,660.55/12,981.51 = 3,732.51/x
  3. Step 3: Cross multiply
    8,660.55x = 12,981.51 × 3,732.51
  4. Step 4: Simplify right side
    8,660.55x = 48,453,615.89
  5. Step 5: Solve for x
    x = 48,453,615.89/8,660.55
  6. Step 6: Final answer
    x = 5,594.75

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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.