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Finding the Fourth Proportional to 73,083.68, 100,855.08 and 39,549.68

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Solution

The fourth proportional to 73,083.68, 100,855.08 and 39,549.68 is: 54,578.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,083.68 : 100,855.08 = 39,549.68 : x
  2. Step 2: Convert to fraction form
    73,083.68/100,855.08 = 39,549.68/x
  3. Step 3: Cross multiply
    73,083.68x = 100,855.08 × 39,549.68
  4. Step 4: Simplify right side
    73,083.68x = 3,988,786,140.37
  5. Step 5: Solve for x
    x = 3,988,786,140.37/73,083.68
  6. Step 6: Final answer
    x = 54,578.34

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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.