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Finding the Fourth Proportional to 10,392.70, 15,591.12 and 2,997.22

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Solution

The fourth proportional to 10,392.70, 15,591.12 and 2,997.22 is: 4,496.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,392.70 : 15,591.12 = 2,997.22 : x
  2. Step 2: Convert to fraction form
    10,392.70/15,591.12 = 2,997.22/x
  3. Step 3: Cross multiply
    10,392.70x = 15,591.12 × 2,997.22
  4. Step 4: Simplify right side
    10,392.70x = 46,730,016.69
  5. Step 5: Solve for x
    x = 46,730,016.69/10,392.70
  6. Step 6: Final answer
    x = 4,496.43

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Double scale
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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.