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Finding the Fourth Proportional to 252,809.30, 379,268.63 and 75,330.61

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Solution

The fourth proportional to 252,809.30, 379,268.63 and 75,330.61 is: 113,012.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,809.30 : 379,268.63 = 75,330.61 : x
  2. Step 2: Convert to fraction form
    252,809.30/379,268.63 = 75,330.61/x
  3. Step 3: Cross multiply
    252,809.30x = 379,268.63 × 75,330.61
  4. Step 4: Simplify right side
    252,809.30x = 28,570,536,209.43
  5. Step 5: Solve for x
    x = 28,570,536,209.43/252,809.30
  6. Step 6: Final answer
    x = 113,012.20

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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.