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Finding the Fourth Proportional to 61,698.38, 85,138.92 and 34,843.54

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Solution

The fourth proportional to 61,698.38, 85,138.92 and 34,843.54 is: 48,081.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,698.38 : 85,138.92 = 34,843.54 : x
  2. Step 2: Convert to fraction form
    61,698.38/85,138.92 = 34,843.54/x
  3. Step 3: Cross multiply
    61,698.38x = 85,138.92 × 34,843.54
  4. Step 4: Simplify right side
    61,698.38x = 2,966,541,364.58
  5. Step 5: Solve for x
    x = 2,966,541,364.58/61,698.38
  6. Step 6: Final answer
    x = 48,081.35

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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.