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Finding the Fourth Proportional to 70,051.71, 96,691.94 and 39,853.90

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Solution

The fourth proportional to 70,051.71, 96,691.94 and 39,853.90 is: 55,010.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,051.71 : 96,691.94 = 39,853.90 : x
  2. Step 2: Convert to fraction form
    70,051.71/96,691.94 = 39,853.90/x
  3. Step 3: Cross multiply
    70,051.71x = 96,691.94 × 39,853.90
  4. Step 4: Simplify right side
    70,051.71x = 3,853,550,907.57
  5. Step 5: Solve for x
    x = 3,853,550,907.57/70,051.71
  6. Step 6: Final answer
    x = 55,010.09

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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.