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Finding the Fourth Proportional to 127,768.68, 191,682.18 and 39,034.80

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Solution

The fourth proportional to 127,768.68, 191,682.18 and 39,034.80 is: 58,561.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,768.68 : 191,682.18 = 39,034.80 : x
  2. Step 2: Convert to fraction form
    127,768.68/191,682.18 = 39,034.80/x
  3. Step 3: Cross multiply
    127,768.68x = 191,682.18 × 39,034.80
  4. Step 4: Simplify right side
    127,768.68x = 7,482,275,559.86
  5. Step 5: Solve for x
    x = 7,482,275,559.86/127,768.68
  6. Step 6: Final answer
    x = 58,561.11

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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.