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Finding the Fourth Proportional to 12,498.48, 18,747.72 and 5,005.41

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Solution

The fourth proportional to 12,498.48, 18,747.72 and 5,005.41 is: 7,508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,498.48 : 18,747.72 = 5,005.41 : x
  2. Step 2: Convert to fraction form
    12,498.48/18,747.72 = 5,005.41/x
  3. Step 3: Cross multiply
    12,498.48x = 18,747.72 × 5,005.41
  4. Step 4: Simplify right side
    12,498.48x = 93,840,025.17
  5. Step 5: Solve for x
    x = 93,840,025.17/12,498.48
  6. Step 6: Final answer
    x = 7,508.12

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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.