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Finding the Fourth Proportional to 28,062.72, 38,723.00 and 15,798.24

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Solution

The fourth proportional to 28,062.72, 38,723.00 and 15,798.24 is: 21,799.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.72 : 38,723.00 = 15,798.24 : x
  2. Step 2: Convert to fraction form
    28,062.72/38,723.00 = 15,798.24/x
  3. Step 3: Cross multiply
    28,062.72x = 38,723.00 × 15,798.24
  4. Step 4: Simplify right side
    28,062.72x = 611,755,168.53
  5. Step 5: Solve for x
    x = 611,755,168.53/28,062.72
  6. Step 6: Final answer
    x = 21,799.57

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