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Finding the Fourth Proportional to 67,205.86, 92,743.36 and 36,990.53

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Solution

The fourth proportional to 67,205.86, 92,743.36 and 36,990.53 is: 51,046.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,205.86 : 92,743.36 = 36,990.53 : x
  2. Step 2: Convert to fraction form
    67,205.86/92,743.36 = 36,990.53/x
  3. Step 3: Cross multiply
    67,205.86x = 92,743.36 × 36,990.53
  4. Step 4: Simplify right side
    67,205.86x = 3,430,626,040.38
  5. Step 5: Solve for x
    x = 3,430,626,040.38/67,205.86
  6. Step 6: Final answer
    x = 51,046.53

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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.