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Finding the Fourth Proportional to 115,902.40, 173,810.40 and 45,767.20

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Solution

The fourth proportional to 115,902.40, 173,810.40 and 45,767.20 is: 68,633.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,902.40 : 173,810.40 = 45,767.20 : x
  2. Step 2: Convert to fraction form
    115,902.40/173,810.40 = 45,767.20/x
  3. Step 3: Cross multiply
    115,902.40x = 173,810.40 × 45,767.20
  4. Step 4: Simplify right side
    115,902.40x = 7,954,815,338.88
  5. Step 5: Solve for x
    x = 7,954,815,338.88/115,902.40
  6. Step 6: Final answer
    x = 68,633.74

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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.