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Finding the Fourth Proportional to 321,147.59, 443,230.85 and 185,154.90

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Solution

The fourth proportional to 321,147.59, 443,230.85 and 185,154.90 is: 255,540.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,147.59 : 443,230.85 = 185,154.90 : x
  2. Step 2: Convert to fraction form
    321,147.59/443,230.85 = 185,154.90/x
  3. Step 3: Cross multiply
    321,147.59x = 443,230.85 × 185,154.90
  4. Step 4: Simplify right side
    321,147.59x = 82,066,362,509.44
  5. Step 5: Solve for x
    x = 82,066,362,509.44/321,147.59
  6. Step 6: Final answer
    x = 255,540.96

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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.