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Finding the Fourth Proportional to 23,157.28, 34,721.88 and 7,572.88

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Solution

The fourth proportional to 23,157.28, 34,721.88 and 7,572.88 is: 11,354.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,157.28 : 34,721.88 = 7,572.88 : x
  2. Step 2: Convert to fraction form
    23,157.28/34,721.88 = 7,572.88/x
  3. Step 3: Cross multiply
    23,157.28x = 34,721.88 × 7,572.88
  4. Step 4: Simplify right side
    23,157.28x = 262,944,630.61
  5. Step 5: Solve for x
    x = 262,944,630.61/23,157.28
  6. Step 6: Final answer
    x = 11,354.73

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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.