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Finding the Fourth Proportional to 108,821.92, 150,188.94 and 61,077.91

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Solution

The fourth proportional to 108,821.92, 150,188.94 and 61,077.91 is: 84,295.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,821.92 : 150,188.94 = 61,077.91 : x
  2. Step 2: Convert to fraction form
    108,821.92/150,188.94 = 61,077.91/x
  3. Step 3: Cross multiply
    108,821.92x = 150,188.94 × 61,077.91
  4. Step 4: Simplify right side
    108,821.92x = 9,173,226,560.32
  5. Step 5: Solve for x
    x = 9,173,226,560.32/108,821.92
  6. Step 6: Final answer
    x = 84,295.76

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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.