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Finding the Fourth Proportional to 82,115.88, 113,319.90 and 44,390.13

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Solution

The fourth proportional to 82,115.88, 113,319.90 and 44,390.13 is: 61,258.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,115.88 : 113,319.90 = 44,390.13 : x
  2. Step 2: Convert to fraction form
    82,115.88/113,319.90 = 44,390.13/x
  3. Step 3: Cross multiply
    82,115.88x = 113,319.90 × 44,390.13
  4. Step 4: Simplify right side
    82,115.88x = 5,030,285,092.59
  5. Step 5: Solve for x
    x = 5,030,285,092.59/82,115.88
  6. Step 6: Final answer
    x = 61,258.37

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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.