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Finding the Fourth Proportional to 242,615.67, 363,989.02 and 74,131.38

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Solution

The fourth proportional to 242,615.67, 363,989.02 and 74,131.38 is: 111,217.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,615.67 : 363,989.02 = 74,131.38 : x
  2. Step 2: Convert to fraction form
    242,615.67/363,989.02 = 74,131.38/x
  3. Step 3: Cross multiply
    242,615.67x = 363,989.02 × 74,131.38
  4. Step 4: Simplify right side
    242,615.67x = 26,983,006,166.85
  5. Step 5: Solve for x
    x = 26,983,006,166.85/242,615.67
  6. Step 6: Final answer
    x = 111,217.08

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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.