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Finding the Fourth Proportional to 12,591.28, 17,375.99 and 7,002.28

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Solution

The fourth proportional to 12,591.28, 17,375.99 and 7,002.28 is: 9,663.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.28 : 17,375.99 = 7,002.28 : x
  2. Step 2: Convert to fraction form
    12,591.28/17,375.99 = 7,002.28/x
  3. Step 3: Cross multiply
    12,591.28x = 17,375.99 × 7,002.28
  4. Step 4: Simplify right side
    12,591.28x = 121,671,533.97
  5. Step 5: Solve for x
    x = 121,671,533.97/12,591.28
  6. Step 6: Final answer
    x = 9,663.16

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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.