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Finding the Fourth Proportional to 73,980.81, 110,999.16 and 44,419.25

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Solution

The fourth proportional to 73,980.81, 110,999.16 and 44,419.25 is: 66,645.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,980.81 : 110,999.16 = 44,419.25 : x
  2. Step 2: Convert to fraction form
    73,980.81/110,999.16 = 44,419.25/x
  3. Step 3: Cross multiply
    73,980.81x = 110,999.16 × 44,419.25
  4. Step 4: Simplify right side
    73,980.81x = 4,930,499,715.33
  5. Step 5: Solve for x
    x = 4,930,499,715.33/73,980.81
  6. Step 6: Final answer
    x = 66,645.66

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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.