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Finding the Fourth Proportional to 21,753.71, 30,034.57 and 16,708.90

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Solution

The fourth proportional to 21,753.71, 30,034.57 and 16,708.90 is: 23,069.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.71 : 30,034.57 = 16,708.90 : x
  2. Step 2: Convert to fraction form
    21,753.71/30,034.57 = 16,708.90/x
  3. Step 3: Cross multiply
    21,753.71x = 30,034.57 × 16,708.90
  4. Step 4: Simplify right side
    21,753.71x = 501,844,626.67
  5. Step 5: Solve for x
    x = 501,844,626.67/21,753.71
  6. Step 6: Final answer
    x = 23,069.39

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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.