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Finding the Fourth Proportional to 257,044.80, 354,742.08 and 189,371.20

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Solution

The fourth proportional to 257,044.80, 354,742.08 and 189,371.20 is: 261,347.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,044.80 : 354,742.08 = 189,371.20 : x
  2. Step 2: Convert to fraction form
    257,044.80/354,742.08 = 189,371.20/x
  3. Step 3: Cross multiply
    257,044.80x = 354,742.08 × 189,371.20
  4. Step 4: Simplify right side
    257,044.80x = 67,177,933,380.10
  5. Step 5: Solve for x
    x = 67,177,933,380.10/257,044.80
  6. Step 6: Final answer
    x = 261,347.18

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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.