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Finding the Fourth Proportional to 2,475.92, 3,712.14 and 915.16

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Solution

The fourth proportional to 2,475.92, 3,712.14 and 915.16 is: 1,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,475.92 : 3,712.14 = 915.16 : x
  2. Step 2: Convert to fraction form
    2,475.92/3,712.14 = 915.16/x
  3. Step 3: Cross multiply
    2,475.92x = 3,712.14 × 915.16
  4. Step 4: Simplify right side
    2,475.92x = 3,397,202.04
  5. Step 5: Solve for x
    x = 3,397,202.04/2,475.92
  6. Step 6: Final answer
    x = 1,372.10

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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.