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Finding the Fourth Proportional to 61,940.30, 92,442.38 and 55,961.60

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Solution

The fourth proportional to 61,940.30, 92,442.38 and 55,961.60 is: 83,519.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,940.30 : 92,442.38 = 55,961.60 : x
  2. Step 2: Convert to fraction form
    61,940.30/92,442.38 = 55,961.60/x
  3. Step 3: Cross multiply
    61,940.30x = 92,442.38 × 55,961.60
  4. Step 4: Simplify right side
    61,940.30x = 5,173,223,492.61
  5. Step 5: Solve for x
    x = 5,173,223,492.61/61,940.30
  6. Step 6: Final answer
    x = 83,519.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.