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Finding the Fourth Proportional to 104,186.75, 156,363.92 and 54,281.75

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Solution

The fourth proportional to 104,186.75, 156,363.92 and 54,281.75 is: 81,466.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,186.75 : 156,363.92 = 54,281.75 : x
  2. Step 2: Convert to fraction form
    104,186.75/156,363.92 = 54,281.75/x
  3. Step 3: Cross multiply
    104,186.75x = 156,363.92 × 54,281.75
  4. Step 4: Simplify right side
    104,186.75x = 8,487,707,214.46
  5. Step 5: Solve for x
    x = 8,487,707,214.46/104,186.75
  6. Step 6: Final answer
    x = 81,466.28

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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.