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Finding the Fourth Proportional to 17,872.92, 24,665.65 and 9,915.01

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Solution

The fourth proportional to 17,872.92, 24,665.65 and 9,915.01 is: 13,683.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,872.92 : 24,665.65 = 9,915.01 : x
  2. Step 2: Convert to fraction form
    17,872.92/24,665.65 = 9,915.01/x
  3. Step 3: Cross multiply
    17,872.92x = 24,665.65 × 9,915.01
  4. Step 4: Simplify right side
    17,872.92x = 244,560,079.95
  5. Step 5: Solve for x
    x = 244,560,079.95/17,872.92
  6. Step 6: Final answer
    x = 13,683.28

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1.5x scale

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.