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Finding the Fourth Proportional to 70,956.96, 97,917.09 and 40,326.05

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Solution

The fourth proportional to 70,956.96, 97,917.09 and 40,326.05 is: 55,647.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,956.96 : 97,917.09 = 40,326.05 : x
  2. Step 2: Convert to fraction form
    70,956.96/97,917.09 = 40,326.05/x
  3. Step 3: Cross multiply
    70,956.96x = 97,917.09 × 40,326.05
  4. Step 4: Simplify right side
    70,956.96x = 3,948,608,775.98
  5. Step 5: Solve for x
    x = 3,948,608,775.98/70,956.96
  6. Step 6: Final answer
    x = 55,647.95

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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.