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Finding the Fourth Proportional to 73,167.81, 109,751.69 and 20,577.28

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Solution

The fourth proportional to 73,167.81, 109,751.69 and 20,577.28 is: 30,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,167.81 : 109,751.69 = 20,577.28 : x
  2. Step 2: Convert to fraction form
    73,167.81/109,751.69 = 20,577.28/x
  3. Step 3: Cross multiply
    73,167.81x = 109,751.69 × 20,577.28
  4. Step 4: Simplify right side
    73,167.81x = 2,258,391,255.60
  5. Step 5: Solve for x
    x = 2,258,391,255.60/73,167.81
  6. Step 6: Final answer
    x = 30,865.91

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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.