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Finding the Fourth Proportional to 8,545.50, 12,815.17 and 3,615.52

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Solution

The fourth proportional to 8,545.50, 12,815.17 and 3,615.52 is: 5,421.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.50 : 12,815.17 = 3,615.52 : x
  2. Step 2: Convert to fraction form
    8,545.50/12,815.17 = 3,615.52/x
  3. Step 3: Cross multiply
    8,545.50x = 12,815.17 × 3,615.52
  4. Step 4: Simplify right side
    8,545.50x = 46,333,503.44
  5. Step 5: Solve for x
    x = 46,333,503.44/8,545.50
  6. Step 6: Final answer
    x = 5,421.98

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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.