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Finding the Fourth Proportional to 21,853.38, 32,780.24 and 7,062.29

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Solution

The fourth proportional to 21,853.38, 32,780.24 and 7,062.29 is: 10,593.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,853.38 : 32,780.24 = 7,062.29 : x
  2. Step 2: Convert to fraction form
    21,853.38/32,780.24 = 7,062.29/x
  3. Step 3: Cross multiply
    21,853.38x = 32,780.24 × 7,062.29
  4. Step 4: Simplify right side
    21,853.38x = 231,503,551.07
  5. Step 5: Solve for x
    x = 231,503,551.07/21,853.38
  6. Step 6: Final answer
    x = 10,593.49

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Half scale
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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.