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Finding the Fourth Proportional to 8,599.64, 12,882.18 and 4,487

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Solution

The fourth proportional to 8,599.64, 12,882.18 and 4,487 is: 6,721.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599.64 : 12,882.18 = 4,487 : x
  2. Step 2: Convert to fraction form
    8,599.64/12,882.18 = 4,487/x
  3. Step 3: Cross multiply
    8,599.64x = 12,882.18 × 4,487
  4. Step 4: Simplify right side
    8,599.64x = 57,802,341.66
  5. Step 5: Solve for x
    x = 57,802,341.66/8,599.64
  6. Step 6: Final answer
    x = 6,721.48

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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.