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Finding the Fourth Proportional to 92,644.52, 138,288.77 and 79,580.84

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Solution

The fourth proportional to 92,644.52, 138,288.77 and 79,580.84 is: 118,788.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,644.52 : 138,288.77 = 79,580.84 : x
  2. Step 2: Convert to fraction form
    92,644.52/138,288.77 = 79,580.84/x
  3. Step 3: Cross multiply
    92,644.52x = 138,288.77 × 79,580.84
  4. Step 4: Simplify right side
    92,644.52x = 11,005,135,389.82
  5. Step 5: Solve for x
    x = 11,005,135,389.82/92,644.52
  6. Step 6: Final answer
    x = 118,788.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.