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Finding the Fourth Proportional to 28,093, 38,764.92 and 15,517.84

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Solution

The fourth proportional to 28,093, 38,764.92 and 15,517.84 is: 21,412.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,093 : 38,764.92 = 15,517.84 : x
  2. Step 2: Convert to fraction form
    28,093/38,764.92 = 15,517.84/x
  3. Step 3: Cross multiply
    28,093x = 38,764.92 × 15,517.84
  4. Step 4: Simplify right side
    28,093x = 601,547,826.17
  5. Step 5: Solve for x
    x = 601,547,826.17/28,093
  6. Step 6: Final answer
    x = 21,412.73

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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.