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Finding the Fourth Proportional to 61,965.81, 85,514.13 and 36,815.31

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Solution

The fourth proportional to 61,965.81, 85,514.13 and 36,815.31 is: 50,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,965.81 : 85,514.13 = 36,815.31 : x
  2. Step 2: Convert to fraction form
    61,965.81/85,514.13 = 36,815.31/x
  3. Step 3: Cross multiply
    61,965.81x = 85,514.13 × 36,815.31
  4. Step 4: Simplify right side
    61,965.81x = 3,148,229,205.33
  5. Step 5: Solve for x
    x = 3,148,229,205.33/61,965.81
  6. Step 6: Final answer
    x = 50,805.91

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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.