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Finding the Fourth Proportional to 179,638.61, 269,383.77 and 61,319.48

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Solution

The fourth proportional to 179,638.61, 269,383.77 and 61,319.48 is: 91,953.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,638.61 : 269,383.77 = 61,319.48 : x
  2. Step 2: Convert to fraction form
    179,638.61/269,383.77 = 61,319.48/x
  3. Step 3: Cross multiply
    179,638.61x = 269,383.77 × 61,319.48
  4. Step 4: Simplify right side
    179,638.61x = 16,518,471,349.92
  5. Step 5: Solve for x
    x = 16,518,471,349.92/179,638.61
  6. Step 6: Final answer
    x = 91,953.91

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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.