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Finding the Fourth Proportional to 7,224.97, 9,966.39 and 4,240.24

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Solution

The fourth proportional to 7,224.97, 9,966.39 and 4,240.24 is: 5,849.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,224.97 : 9,966.39 = 4,240.24 : x
  2. Step 2: Convert to fraction form
    7,224.97/9,966.39 = 4,240.24/x
  3. Step 3: Cross multiply
    7,224.97x = 9,966.39 × 4,240.24
  4. Step 4: Simplify right side
    7,224.97x = 42,259,854.55
  5. Step 5: Solve for x
    x = 42,259,854.55/7,224.97
  6. Step 6: Final answer
    x = 5,849.14

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Double scale
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Similar ratio
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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.