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Finding the Fourth Proportional to 231,809.20, 347,713.80 and 113,498.80

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Solution

The fourth proportional to 231,809.20, 347,713.80 and 113,498.80 is: 170,248.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,809.20 : 347,713.80 = 113,498.80 : x
  2. Step 2: Convert to fraction form
    231,809.20/347,713.80 = 113,498.80/x
  3. Step 3: Cross multiply
    231,809.20x = 347,713.80 × 113,498.80
  4. Step 4: Simplify right side
    231,809.20x = 39,465,099,043.44
  5. Step 5: Solve for x
    x = 39,465,099,043.44/231,809.20
  6. Step 6: Final answer
    x = 170,248.20

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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.