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Finding the Fourth Proportional to 136,561.80, 204,842.70 and 38,065.80

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Solution

The fourth proportional to 136,561.80, 204,842.70 and 38,065.80 is: 57,098.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,561.80 : 204,842.70 = 38,065.80 : x
  2. Step 2: Convert to fraction form
    136,561.80/204,842.70 = 38,065.80/x
  3. Step 3: Cross multiply
    136,561.80x = 204,842.70 × 38,065.80
  4. Step 4: Simplify right side
    136,561.80x = 7,797,501,249.66
  5. Step 5: Solve for x
    x = 7,797,501,249.66/136,561.80
  6. Step 6: Final answer
    x = 57,098.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.