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Finding the Fourth Proportional to 448,315.54, 672,475.47 and 132,778.42

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Solution

The fourth proportional to 448,315.54, 672,475.47 and 132,778.42 is: 199,168.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,315.54 : 672,475.47 = 132,778.42 : x
  2. Step 2: Convert to fraction form
    448,315.54/672,475.47 = 132,778.42/x
  3. Step 3: Cross multiply
    448,315.54x = 672,475.47 × 132,778.42
  4. Step 4: Simplify right side
    448,315.54x = 89,290,230,395.36
  5. Step 5: Solve for x
    x = 89,290,230,395.36/448,315.54
  6. Step 6: Final answer
    x = 199,168.27

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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.