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Finding the Fourth Proportional to 70,843.13, 97,763.52 and 39,011.96

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Solution

The fourth proportional to 70,843.13, 97,763.52 and 39,011.96 is: 53,836.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,843.13 : 97,763.52 = 39,011.96 : x
  2. Step 2: Convert to fraction form
    70,843.13/97,763.52 = 39,011.96/x
  3. Step 3: Cross multiply
    70,843.13x = 97,763.52 × 39,011.96
  4. Step 4: Simplify right side
    70,843.13x = 3,813,946,042.88
  5. Step 5: Solve for x
    x = 3,813,946,042.88/70,843.13
  6. Step 6: Final answer
    x = 53,836.50

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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.