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Finding the Fourth Proportional to 108,554.50, 162,834.95 and 92,659.31

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Solution

The fourth proportional to 108,554.50, 162,834.95 and 92,659.31 is: 138,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,554.50 : 162,834.95 = 92,659.31 : x
  2. Step 2: Convert to fraction form
    108,554.50/162,834.95 = 92,659.31/x
  3. Step 3: Cross multiply
    108,554.50x = 162,834.95 × 92,659.31
  4. Step 4: Simplify right side
    108,554.50x = 15,088,174,110.88
  5. Step 5: Solve for x
    x = 15,088,174,110.88/108,554.50
  6. Step 6: Final answer
    x = 138,991.70

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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.