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Finding the Fourth Proportional to 83,789.70, 125,613.74 and 36,368.93

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Solution

The fourth proportional to 83,789.70, 125,613.74 and 36,368.93 is: 54,522.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,789.70 : 125,613.74 = 36,368.93 : x
  2. Step 2: Convert to fraction form
    83,789.70/125,613.74 = 36,368.93/x
  3. Step 3: Cross multiply
    83,789.70x = 125,613.74 × 36,368.93
  4. Step 4: Simplify right side
    83,789.70x = 4,568,436,507.18
  5. Step 5: Solve for x
    x = 4,568,436,507.18/83,789.70
  6. Step 6: Final answer
    x = 54,522.65

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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.