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Finding the Fourth Proportional to 342,691.24, 513,938.22 and 118,042.60

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Solution

The fourth proportional to 342,691.24, 513,938.22 and 118,042.60 is: 177,029.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,691.24 : 513,938.22 = 118,042.60 : x
  2. Step 2: Convert to fraction form
    342,691.24/513,938.22 = 118,042.60/x
  3. Step 3: Cross multiply
    342,691.24x = 513,938.22 × 118,042.60
  4. Step 4: Simplify right side
    342,691.24x = 60,666,603,728.17
  5. Step 5: Solve for x
    x = 60,666,603,728.17/342,691.24
  6. Step 6: Final answer
    x = 177,029.92

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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.