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Finding the Fourth Proportional to 402,680.18, 604,020.42 and 118,370.73

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Solution

The fourth proportional to 402,680.18, 604,020.42 and 118,370.73 is: 177,556.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,680.18 : 604,020.42 = 118,370.73 : x
  2. Step 2: Convert to fraction form
    402,680.18/604,020.42 = 118,370.73/x
  3. Step 3: Cross multiply
    402,680.18x = 604,020.42 × 118,370.73
  4. Step 4: Simplify right side
    402,680.18x = 71,498,340,315.38
  5. Step 5: Solve for x
    x = 71,498,340,315.38/402,680.18
  6. Step 6: Final answer
    x = 177,556.14

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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.