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Finding the Fourth Proportional to 127,786.68, 191,709.18 and 39,052.80

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Solution

The fourth proportional to 127,786.68, 191,709.18 and 39,052.80 is: 58,588.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,786.68 : 191,709.18 = 39,052.80 : x
  2. Step 2: Convert to fraction form
    127,786.68/191,709.18 = 39,052.80/x
  3. Step 3: Cross multiply
    127,786.68x = 191,709.18 × 39,052.80
  4. Step 4: Simplify right side
    127,786.68x = 7,486,780,264.70
  5. Step 5: Solve for x
    x = 7,486,780,264.70/127,786.68
  6. Step 6: Final answer
    x = 58,588.11

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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.