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Finding the Fourth Proportional to 1,337.61, 1,845.95 and 748.15

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Solution

The fourth proportional to 1,337.61, 1,845.95 and 748.15 is: 1,032.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,337.61 : 1,845.95 = 748.15 : x
  2. Step 2: Convert to fraction form
    1,337.61/1,845.95 = 748.15/x
  3. Step 3: Cross multiply
    1,337.61x = 1,845.95 × 748.15
  4. Step 4: Simplify right side
    1,337.61x = 1,381,034.52
  5. Step 5: Solve for x
    x = 1,381,034.52/1,337.61
  6. Step 6: Final answer
    x = 1,032.46

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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.