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Finding the Fourth Proportional to 108,953.76, 150,339.78 and 61,197.96

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Solution

The fourth proportional to 108,953.76, 150,339.78 and 61,197.96 is: 84,443.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,953.76 : 150,339.78 = 61,197.96 : x
  2. Step 2: Convert to fraction form
    108,953.76/150,339.78 = 61,197.96/x
  3. Step 3: Cross multiply
    108,953.76x = 150,339.78 × 61,197.96
  4. Step 4: Simplify right side
    108,953.76x = 9,200,487,842.85
  5. Step 5: Solve for x
    x = 9,200,487,842.85/108,953.76
  6. Step 6: Final answer
    x = 84,443.97

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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.