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Finding the Fourth Proportional to 10,575.99, 15,863.94 and 6,221.16

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Solution

The fourth proportional to 10,575.99, 15,863.94 and 6,221.16 is: 9,331.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,575.99 : 15,863.94 = 6,221.16 : x
  2. Step 2: Convert to fraction form
    10,575.99/15,863.94 = 6,221.16/x
  3. Step 3: Cross multiply
    10,575.99x = 15,863.94 × 6,221.16
  4. Step 4: Simplify right side
    10,575.99x = 98,692,108.97
  5. Step 5: Solve for x
    x = 98,692,108.97/10,575.99
  6. Step 6: Final answer
    x = 9,331.71

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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.