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Finding the Fourth Proportional to 3,748.24, 5,622.72 and 974.90

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Solution

The fourth proportional to 3,748.24, 5,622.72 and 974.90 is: 1,462.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,748.24 : 5,622.72 = 974.90 : x
  2. Step 2: Convert to fraction form
    3,748.24/5,622.72 = 974.90/x
  3. Step 3: Cross multiply
    3,748.24x = 5,622.72 × 974.90
  4. Step 4: Simplify right side
    3,748.24x = 5,481,600.13
  5. Step 5: Solve for x
    x = 5,481,600.13/3,748.24
  6. Step 6: Final answer
    x = 1,462.45

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Similar ratio
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1.5x scale

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.