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Finding the Fourth Proportional to 67,711.42, 101,567 and 20,326.46

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Solution

The fourth proportional to 67,711.42, 101,567 and 20,326.46 is: 30,489.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,711.42 : 101,567 = 20,326.46 : x
  2. Step 2: Convert to fraction form
    67,711.42/101,567 = 20,326.46/x
  3. Step 3: Cross multiply
    67,711.42x = 101,567 × 20,326.46
  4. Step 4: Simplify right side
    67,711.42x = 2,064,497,562.82
  5. Step 5: Solve for x
    x = 2,064,497,562.82/67,711.42
  6. Step 6: Final answer
    x = 30,489.65

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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.