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Finding the Fourth Proportional to 61,223.80, 91,722.30 and 34,850.20

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Solution

The fourth proportional to 61,223.80, 91,722.30 and 34,850.20 is: 52,210.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,223.80 : 91,722.30 = 34,850.20 : x
  2. Step 2: Convert to fraction form
    61,223.80/91,722.30 = 34,850.20/x
  3. Step 3: Cross multiply
    61,223.80x = 91,722.30 × 34,850.20
  4. Step 4: Simplify right side
    61,223.80x = 3,196,540,499.46
  5. Step 5: Solve for x
    x = 3,196,540,499.46/61,223.80
  6. Step 6: Final answer
    x = 52,210.75

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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.