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Finding the Fourth Proportional to 404,792.80, 606,703.20 and 168,013.60

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Solution

The fourth proportional to 404,792.80, 606,703.20 and 168,013.60 is: 251,818.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,792.80 : 606,703.20 = 168,013.60 : x
  2. Step 2: Convert to fraction form
    404,792.80/606,703.20 = 168,013.60/x
  3. Step 3: Cross multiply
    404,792.80x = 606,703.20 × 168,013.60
  4. Step 4: Simplify right side
    404,792.80x = 101,934,388,763.52
  5. Step 5: Solve for x
    x = 101,934,388,763.52/404,792.80
  6. Step 6: Final answer
    x = 251,818.68

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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.