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Finding the Fourth Proportional to 67,009.47, 92,379.65 and 54,867.57

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Solution

The fourth proportional to 67,009.47, 92,379.65 and 54,867.57 is: 75,640.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,009.47 : 92,379.65 = 54,867.57 : x
  2. Step 2: Convert to fraction form
    67,009.47/92,379.65 = 54,867.57/x
  3. Step 3: Cross multiply
    67,009.47x = 92,379.65 × 54,867.57
  4. Step 4: Simplify right side
    67,009.47x = 5,068,646,912.95
  5. Step 5: Solve for x
    x = 5,068,646,912.95/67,009.47
  6. Step 6: Final answer
    x = 75,640.76

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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.