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Finding the Fourth Proportional to 66,830.39, 92,229.81 and 36,615.77

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Solution

The fourth proportional to 66,830.39, 92,229.81 and 36,615.77 is: 50,531.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,830.39 : 92,229.81 = 36,615.77 : x
  2. Step 2: Convert to fraction form
    66,830.39/92,229.81 = 36,615.77/x
  3. Step 3: Cross multiply
    66,830.39x = 92,229.81 × 36,615.77
  4. Step 4: Simplify right side
    66,830.39x = 3,377,065,510.10
  5. Step 5: Solve for x
    x = 3,377,065,510.10/66,830.39
  6. Step 6: Final answer
    x = 50,531.88

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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.