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Finding the Fourth Proportional to 10,643.97, 15,965.96 and 3,248.47

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Solution

The fourth proportional to 10,643.97, 15,965.96 and 3,248.47 is: 4,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,643.97 : 15,965.96 = 3,248.47 : x
  2. Step 2: Convert to fraction form
    10,643.97/15,965.96 = 3,248.47/x
  3. Step 3: Cross multiply
    10,643.97x = 15,965.96 × 3,248.47
  4. Step 4: Simplify right side
    10,643.97x = 51,864,885.92
  5. Step 5: Solve for x
    x = 51,864,885.92/10,643.97
  6. Step 6: Final answer
    x = 4,872.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.