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Finding the Fourth Proportional to 68,442.78, 94,495.48 and 61,260.24

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Solution

The fourth proportional to 68,442.78, 94,495.48 and 61,260.24 is: 84,578.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,442.78 : 94,495.48 = 61,260.24 : x
  2. Step 2: Convert to fraction form
    68,442.78/94,495.48 = 61,260.24/x
  3. Step 3: Cross multiply
    68,442.78x = 94,495.48 × 61,260.24
  4. Step 4: Simplify right side
    68,442.78x = 5,788,815,783.72
  5. Step 5: Solve for x
    x = 5,788,815,783.72/68,442.78
  6. Step 6: Final answer
    x = 84,578.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.