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Finding the Fourth Proportional to 57,590.39, 79,506.11 and 39,781.23

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Solution

The fourth proportional to 57,590.39, 79,506.11 and 39,781.23 is: 54,919.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,590.39 : 79,506.11 = 39,781.23 : x
  2. Step 2: Convert to fraction form
    57,590.39/79,506.11 = 39,781.23/x
  3. Step 3: Cross multiply
    57,590.39x = 79,506.11 × 39,781.23
  4. Step 4: Simplify right side
    57,590.39x = 3,162,850,425.85
  5. Step 5: Solve for x
    x = 3,162,850,425.85/57,590.39
  6. Step 6: Final answer
    x = 54,919.76

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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.