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Finding the Fourth Proportional to 83,959.20, 125,938.80 and 73,024.20

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Solution

The fourth proportional to 83,959.20, 125,938.80 and 73,024.20 is: 109,536.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,959.20 : 125,938.80 = 73,024.20 : x
  2. Step 2: Convert to fraction form
    83,959.20/125,938.80 = 73,024.20/x
  3. Step 3: Cross multiply
    83,959.20x = 125,938.80 × 73,024.20
  4. Step 4: Simplify right side
    83,959.20x = 9,196,580,118.96
  5. Step 5: Solve for x
    x = 9,196,580,118.96/83,959.20
  6. Step 6: Final answer
    x = 109,536.30

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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.