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Finding the Fourth Proportional to 92,874.60, 128,187.36 and 61,046.46

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Solution

The fourth proportional to 92,874.60, 128,187.36 and 61,046.46 is: 84,257.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,874.60 : 128,187.36 = 61,046.46 : x
  2. Step 2: Convert to fraction form
    92,874.60/128,187.36 = 61,046.46/x
  3. Step 3: Cross multiply
    92,874.60x = 128,187.36 × 61,046.46
  4. Step 4: Simplify right side
    92,874.60x = 7,825,384,544.75
  5. Step 5: Solve for x
    x = 7,825,384,544.75/92,874.60
  6. Step 6: Final answer
    x = 84,257.53

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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.