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Finding the Fourth Proportional to 6,291.52, 9,432.15 and 3,167.80

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Solution

The fourth proportional to 6,291.52, 9,432.15 and 3,167.80 is: 4,749.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.52 : 9,432.15 = 3,167.80 : x
  2. Step 2: Convert to fraction form
    6,291.52/9,432.15 = 3,167.80/x
  3. Step 3: Cross multiply
    6,291.52x = 9,432.15 × 3,167.80
  4. Step 4: Simplify right side
    6,291.52x = 29,879,164.77
  5. Step 5: Solve for x
    x = 29,879,164.77/6,291.52
  6. Step 6: Final answer
    x = 4,749.12

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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.