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Finding the Fourth Proportional to 218,486, 327,729 and 124,926.14

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Solution

The fourth proportional to 218,486, 327,729 and 124,926.14 is: 187,389.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,486 : 327,729 = 124,926.14 : x
  2. Step 2: Convert to fraction form
    218,486/327,729 = 124,926.14/x
  3. Step 3: Cross multiply
    218,486x = 327,729 × 124,926.14
  4. Step 4: Simplify right side
    218,486x = 40,941,918,936.06
  5. Step 5: Solve for x
    x = 40,941,918,936.06/218,486
  6. Step 6: Final answer
    x = 187,389.21

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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.