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Finding the Fourth Proportional to 299,663.20, 449,264.40 and 168,335.20

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Solution

The fourth proportional to 299,663.20, 449,264.40 and 168,335.20 is: 252,373.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,663.20 : 449,264.40 = 168,335.20 : x
  2. Step 2: Convert to fraction form
    299,663.20/449,264.40 = 168,335.20/x
  3. Step 3: Cross multiply
    299,663.20x = 449,264.40 × 168,335.20
  4. Step 4: Simplify right side
    299,663.20x = 75,627,012,626.88
  5. Step 5: Solve for x
    x = 75,627,012,626.88/299,663.20
  6. Step 6: Final answer
    x = 252,373.37

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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.