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Finding the Fourth Proportional to 31,737.92, 47,591.28 and 13,012.88

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Solution

The fourth proportional to 31,737.92, 47,591.28 and 13,012.88 is: 19,512.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,737.92 : 47,591.28 = 13,012.88 : x
  2. Step 2: Convert to fraction form
    31,737.92/47,591.28 = 13,012.88/x
  3. Step 3: Cross multiply
    31,737.92x = 47,591.28 × 13,012.88
  4. Step 4: Simplify right side
    31,737.92x = 619,299,615.69
  5. Step 5: Solve for x
    x = 619,299,615.69/31,737.92
  6. Step 6: Final answer
    x = 19,512.92

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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.