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Finding the Fourth Proportional to 61,758.65, 92,640.71 and 30,131.19

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Solution

The fourth proportional to 61,758.65, 92,640.71 and 30,131.19 is: 45,198.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,758.65 : 92,640.71 = 30,131.19 : x
  2. Step 2: Convert to fraction form
    61,758.65/92,640.71 = 30,131.19/x
  3. Step 3: Cross multiply
    61,758.65x = 92,640.71 × 30,131.19
  4. Step 4: Simplify right side
    61,758.65x = 2,791,374,910.07
  5. Step 5: Solve for x
    x = 2,791,374,910.07/61,758.65
  6. Step 6: Final answer
    x = 45,198.12

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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.