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Finding the Fourth Proportional to 1,353.25, 1,867.52 and 747.61

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Solution

The fourth proportional to 1,353.25, 1,867.52 and 747.61 is: 1,031.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.25 : 1,867.52 = 747.61 : x
  2. Step 2: Convert to fraction form
    1,353.25/1,867.52 = 747.61/x
  3. Step 3: Cross multiply
    1,353.25x = 1,867.52 × 747.61
  4. Step 4: Simplify right side
    1,353.25x = 1,396,176.63
  5. Step 5: Solve for x
    x = 1,396,176.63/1,353.25
  6. Step 6: Final answer
    x = 1,031.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.