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Finding the Fourth Proportional to 61,058.56, 84,273.60 and 39,801.28

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Solution

The fourth proportional to 61,058.56, 84,273.60 and 39,801.28 is: 54,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,058.56 : 84,273.60 = 39,801.28 : x
  2. Step 2: Convert to fraction form
    61,058.56/84,273.60 = 39,801.28/x
  3. Step 3: Cross multiply
    61,058.56x = 84,273.60 × 39,801.28
  4. Step 4: Simplify right side
    61,058.56x = 3,354,197,150.21
  5. Step 5: Solve for x
    x = 3,354,197,150.21/61,058.56
  6. Step 6: Final answer
    x = 54,934.10

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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.