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Finding the Fourth Proportional to 83,916.30, 125,943.30 and 83,260.20

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Solution

The fourth proportional to 83,916.30, 125,943.30 and 83,260.20 is: 124,958.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,916.30 : 125,943.30 = 83,260.20 : x
  2. Step 2: Convert to fraction form
    83,916.30/125,943.30 = 83,260.20/x
  3. Step 3: Cross multiply
    83,916.30x = 125,943.30 × 83,260.20
  4. Step 4: Simplify right side
    83,916.30x = 10,486,064,346.66
  5. Step 5: Solve for x
    x = 10,486,064,346.66/83,916.30
  6. Step 6: Final answer
    x = 124,958.61

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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.