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Finding the Fourth Proportional to 78,221.95, 107,945.63 and 44,237.11

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Solution

The fourth proportional to 78,221.95, 107,945.63 and 44,237.11 is: 61,046.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,221.95 : 107,945.63 = 44,237.11 : x
  2. Step 2: Convert to fraction form
    78,221.95/107,945.63 = 44,237.11/x
  3. Step 3: Cross multiply
    78,221.95x = 107,945.63 × 44,237.11
  4. Step 4: Simplify right side
    78,221.95x = 4,775,202,708.33
  5. Step 5: Solve for x
    x = 4,775,202,708.33/78,221.95
  6. Step 6: Final answer
    x = 61,046.84

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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.