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Finding the Fourth Proportional to 264,561.90, 396,842.85 and 140,145.90

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Solution

The fourth proportional to 264,561.90, 396,842.85 and 140,145.90 is: 210,218.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,561.90 : 396,842.85 = 140,145.90 : x
  2. Step 2: Convert to fraction form
    264,561.90/396,842.85 = 140,145.90/x
  3. Step 3: Cross multiply
    264,561.90x = 396,842.85 × 140,145.90
  4. Step 4: Simplify right side
    264,561.90x = 55,615,898,371.82
  5. Step 5: Solve for x
    x = 55,615,898,371.82/264,561.90
  6. Step 6: Final answer
    x = 210,218.85

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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.