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Finding the Fourth Proportional to 83,856.70, 125,930.85 and 44,490.70

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Solution

The fourth proportional to 83,856.70, 125,930.85 and 44,490.70 is: 66,813.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,856.70 : 125,930.85 = 44,490.70 : x
  2. Step 2: Convert to fraction form
    83,856.70/125,930.85 = 44,490.70/x
  3. Step 3: Cross multiply
    83,856.70x = 125,930.85 × 44,490.70
  4. Step 4: Simplify right side
    83,856.70x = 5,602,751,668.10
  5. Step 5: Solve for x
    x = 5,602,751,668.10/83,856.70
  6. Step 6: Final answer
    x = 66,813.41

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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.