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Finding the Fourth Proportional to 70,992.06, 97,969.05 and 39,161.04

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Solution

The fourth proportional to 70,992.06, 97,969.05 and 39,161.04 is: 54,042.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,992.06 : 97,969.05 = 39,161.04 : x
  2. Step 2: Convert to fraction form
    70,992.06/97,969.05 = 39,161.04/x
  3. Step 3: Cross multiply
    70,992.06x = 97,969.05 × 39,161.04
  4. Step 4: Simplify right side
    70,992.06x = 3,836,569,885.81
  5. Step 5: Solve for x
    x = 3,836,569,885.81/70,992.06
  6. Step 6: Final answer
    x = 54,042.24

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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.