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Finding the Fourth Proportional to 2,657.34, 3,986.01 and 925.02

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Solution

The fourth proportional to 2,657.34, 3,986.01 and 925.02 is: 1,387.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.34 : 3,986.01 = 925.02 : x
  2. Step 2: Convert to fraction form
    2,657.34/3,986.01 = 925.02/x
  3. Step 3: Cross multiply
    2,657.34x = 3,986.01 × 925.02
  4. Step 4: Simplify right side
    2,657.34x = 3,687,138.97
  5. Step 5: Solve for x
    x = 3,687,138.97/2,657.34
  6. Step 6: Final answer
    x = 1,387.53

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Double scale
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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.