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Finding the Fourth Proportional to 108,295.92, 162,443.88 and 71,351.28

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Solution

The fourth proportional to 108,295.92, 162,443.88 and 71,351.28 is: 107,026.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,295.92 : 162,443.88 = 71,351.28 : x
  2. Step 2: Convert to fraction form
    108,295.92/162,443.88 = 71,351.28/x
  3. Step 3: Cross multiply
    108,295.92x = 162,443.88 × 71,351.28
  4. Step 4: Simplify right side
    108,295.92x = 11,590,578,766.17
  5. Step 5: Solve for x
    x = 11,590,578,766.17/108,295.92
  6. Step 6: Final answer
    x = 107,026.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.