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Finding the Fourth Proportional to 54,358.78, 74,945.68 and 35,204.72

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Solution

The fourth proportional to 54,358.78, 74,945.68 and 35,204.72 is: 48,537.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,358.78 : 74,945.68 = 35,204.72 : x
  2. Step 2: Convert to fraction form
    54,358.78/74,945.68 = 35,204.72/x
  3. Step 3: Cross multiply
    54,358.78x = 74,945.68 × 35,204.72
  4. Step 4: Simplify right side
    54,358.78x = 2,638,441,679.61
  5. Step 5: Solve for x
    x = 2,638,441,679.61/54,358.78
  6. Step 6: Final answer
    x = 48,537.54

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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.