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Finding the Fourth Proportional to 299,695.20, 449,312.40 and 168,367.20

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Solution

The fourth proportional to 299,695.20, 449,312.40 and 168,367.20 is: 252,421.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,695.20 : 449,312.40 = 168,367.20 : x
  2. Step 2: Convert to fraction form
    299,695.20/449,312.40 = 168,367.20/x
  3. Step 3: Cross multiply
    299,695.20x = 449,312.40 × 168,367.20
  4. Step 4: Simplify right side
    299,695.20x = 75,649,470,713.28
  5. Step 5: Solve for x
    x = 75,649,470,713.28/299,695.20
  6. Step 6: Final answer
    x = 252,421.36

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1.5x scale

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.