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Finding the Fourth Proportional to 70,760.97, 97,650 and 38,929.80

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Solution

The fourth proportional to 70,760.97, 97,650 and 38,929.80 is: 53,723.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,760.97 : 97,650 = 38,929.80 : x
  2. Step 2: Convert to fraction form
    70,760.97/97,650 = 38,929.80/x
  3. Step 3: Cross multiply
    70,760.97x = 97,650 × 38,929.80
  4. Step 4: Simplify right side
    70,760.97x = 3,801,494,970.00
  5. Step 5: Solve for x
    x = 3,801,494,970.00/70,760.97
  6. Step 6: Final answer
    x = 53,723.05

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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.