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Finding the Fourth Proportional to 69,996.96, 96,517.34 and 57,210.46

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Solution

The fourth proportional to 69,996.96, 96,517.34 and 57,210.46 is: 78,886.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,996.96 : 96,517.34 = 57,210.46 : x
  2. Step 2: Convert to fraction form
    69,996.96/96,517.34 = 57,210.46/x
  3. Step 3: Cross multiply
    69,996.96x = 96,517.34 × 57,210.46
  4. Step 4: Simplify right side
    69,996.96x = 5,521,801,419.38
  5. Step 5: Solve for x
    x = 5,521,801,419.38/69,996.96
  6. Step 6: Final answer
    x = 78,886.30

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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.