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Finding the Fourth Proportional to 70,902.23, 97,845.72 and 39,072.26

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Solution

The fourth proportional to 70,902.23, 97,845.72 and 39,072.26 is: 53,920.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902.23 : 97,845.72 = 39,072.26 : x
  2. Step 2: Convert to fraction form
    70,902.23/97,845.72 = 39,072.26/x
  3. Step 3: Cross multiply
    70,902.23x = 97,845.72 × 39,072.26
  4. Step 4: Simplify right side
    70,902.23x = 3,823,052,922.50
  5. Step 5: Solve for x
    x = 3,823,052,922.50/70,902.23
  6. Step 6: Final answer
    x = 53,920.07

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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.