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Finding the Fourth Proportional to 399,301.22, 598,980.54 and 125,723.90

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Solution

The fourth proportional to 399,301.22, 598,980.54 and 125,723.90 is: 188,594.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,301.22 : 598,980.54 = 125,723.90 : x
  2. Step 2: Convert to fraction form
    399,301.22/598,980.54 = 125,723.90/x
  3. Step 3: Cross multiply
    399,301.22x = 598,980.54 × 125,723.90
  4. Step 4: Simplify right side
    399,301.22x = 75,306,169,512.91
  5. Step 5: Solve for x
    x = 75,306,169,512.91/399,301.22
  6. Step 6: Final answer
    x = 188,594.89

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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.