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Finding the Fourth Proportional to 67,269.57, 92,832 and 38,991.66

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Solution

The fourth proportional to 67,269.57, 92,832 and 38,991.66 is: 53,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,269.57 : 92,832 = 38,991.66 : x
  2. Step 2: Convert to fraction form
    67,269.57/92,832 = 38,991.66/x
  3. Step 3: Cross multiply
    67,269.57x = 92,832 × 38,991.66
  4. Step 4: Simplify right side
    67,269.57x = 3,619,673,781.12
  5. Step 5: Solve for x
    x = 3,619,673,781.12/67,269.57
  6. Step 6: Final answer
    x = 53,808.49

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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.