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Finding the Fourth Proportional to 61,782.60, 92,868.30 and 60,616.20

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Solution

The fourth proportional to 61,782.60, 92,868.30 and 60,616.20 is: 91,115.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,782.60 : 92,868.30 = 60,616.20 : x
  2. Step 2: Convert to fraction form
    61,782.60/92,868.30 = 60,616.20/x
  3. Step 3: Cross multiply
    61,782.60x = 92,868.30 × 60,616.20
  4. Step 4: Simplify right side
    61,782.60x = 5,629,323,446.46
  5. Step 5: Solve for x
    x = 5,629,323,446.46/61,782.60
  6. Step 6: Final answer
    x = 91,115.03

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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.