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Finding the Fourth Proportional to 73,083.75, 100,855.71 and 39,549.75

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Solution

The fourth proportional to 73,083.75, 100,855.71 and 39,549.75 is: 54,578.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,083.75 : 100,855.71 = 39,549.75 : x
  2. Step 2: Convert to fraction form
    73,083.75/100,855.71 = 39,549.75/x
  3. Step 3: Cross multiply
    73,083.75x = 100,855.71 × 39,549.75
  4. Step 4: Simplify right side
    73,083.75x = 3,988,818,116.57
  5. Step 5: Solve for x
    x = 3,988,818,116.57/73,083.75
  6. Step 6: Final answer
    x = 54,578.73

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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.