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Finding the Fourth Proportional to 85,523.31, 128,290.23 and 32,932.85

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Solution

The fourth proportional to 85,523.31, 128,290.23 and 32,932.85 is: 49,401.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,523.31 : 128,290.23 = 32,932.85 : x
  2. Step 2: Convert to fraction form
    85,523.31/128,290.23 = 32,932.85/x
  3. Step 3: Cross multiply
    85,523.31x = 128,290.23 × 32,932.85
  4. Step 4: Simplify right side
    85,523.31x = 4,224,962,259.60
  5. Step 5: Solve for x
    x = 4,224,962,259.60/85,523.31
  6. Step 6: Final answer
    x = 49,401.29

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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.