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Finding the Fourth Proportional to 404,620.60, 606,712.20 and 167,987.20

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Solution

The fourth proportional to 404,620.60, 606,712.20 and 167,987.20 is: 251,890.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,620.60 : 606,712.20 = 167,987.20 : x
  2. Step 2: Convert to fraction form
    404,620.60/606,712.20 = 167,987.20/x
  3. Step 3: Cross multiply
    404,620.60x = 606,712.20 × 167,987.20
  4. Step 4: Simplify right side
    404,620.60x = 101,919,883,683.84
  5. Step 5: Solve for x
    x = 101,919,883,683.84/404,620.60
  6. Step 6: Final answer
    x = 251,890.00

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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.