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Finding the Fourth Proportional to 1,353.32, 1,867.57 and 732.32

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Solution

The fourth proportional to 1,353.32, 1,867.57 and 732.32 is: 1,010.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.32 : 1,867.57 = 732.32 : x
  2. Step 2: Convert to fraction form
    1,353.32/1,867.57 = 732.32/x
  3. Step 3: Cross multiply
    1,353.32x = 1,867.57 × 732.32
  4. Step 4: Simplify right side
    1,353.32x = 1,367,649.52
  5. Step 5: Solve for x
    x = 1,367,649.52/1,353.32
  6. Step 6: Final answer
    x = 1,010.59

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Why These Related Problems?

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