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Finding the Fourth Proportional to 321,149.36, 443,185.80 and 177,918.32

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Solution

The fourth proportional to 321,149.36, 443,185.80 and 177,918.32 is: 245,527.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,149.36 : 443,185.80 = 177,918.32 : x
  2. Step 2: Convert to fraction form
    321,149.36/443,185.80 = 177,918.32/x
  3. Step 3: Cross multiply
    321,149.36x = 443,185.80 × 177,918.32
  4. Step 4: Simplify right side
    321,149.36x = 78,850,872,983.86
  5. Step 5: Solve for x
    x = 78,850,872,983.86/321,149.36
  6. Step 6: Final answer
    x = 245,527.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.