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Finding the Fourth Proportional to 70,793.92, 97,693.65 and 40,172.59

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Solution

The fourth proportional to 70,793.92, 97,693.65 and 40,172.59 is: 55,437.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,793.92 : 97,693.65 = 40,172.59 : x
  2. Step 2: Convert to fraction form
    70,793.92/97,693.65 = 40,172.59/x
  3. Step 3: Cross multiply
    70,793.92x = 97,693.65 × 40,172.59
  4. Step 4: Simplify right side
    70,793.92x = 3,924,606,947.05
  5. Step 5: Solve for x
    x = 3,924,606,947.05/70,793.92
  6. Step 6: Final answer
    x = 55,437.06

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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.