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Finding the Fourth Proportional to 83,779.07, 125,758.14 and 33,891.78

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Solution

The fourth proportional to 83,779.07, 125,758.14 and 33,891.78 is: 50,873.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,779.07 : 125,758.14 = 33,891.78 : x
  2. Step 2: Convert to fraction form
    83,779.07/125,758.14 = 33,891.78/x
  3. Step 3: Cross multiply
    83,779.07x = 125,758.14 × 33,891.78
  4. Step 4: Simplify right side
    83,779.07x = 4,262,167,214.09
  5. Step 5: Solve for x
    x = 4,262,167,214.09/83,779.07
  6. Step 6: Final answer
    x = 50,873.89

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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.