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Finding the Fourth Proportional to 117,615.92, 162,224.16 and 74,608.52

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Solution

The fourth proportional to 117,615.92, 162,224.16 and 74,608.52 is: 102,905.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,615.92 : 162,224.16 = 74,608.52 : x
  2. Step 2: Convert to fraction form
    117,615.92/162,224.16 = 74,608.52/x
  3. Step 3: Cross multiply
    117,615.92x = 162,224.16 × 74,608.52
  4. Step 4: Simplify right side
    117,615.92x = 12,103,304,485.84
  5. Step 5: Solve for x
    x = 12,103,304,485.84/117,615.92
  6. Step 6: Final answer
    x = 102,905.33

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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.