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Finding the Fourth Proportional to 92,938.85, 128,245.97 and 54,696.11

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Solution

The fourth proportional to 92,938.85, 128,245.97 and 54,696.11 is: 75,474.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,938.85 : 128,245.97 = 54,696.11 : x
  2. Step 2: Convert to fraction form
    92,938.85/128,245.97 = 54,696.11/x
  3. Step 3: Cross multiply
    92,938.85x = 128,245.97 × 54,696.11
  4. Step 4: Simplify right side
    92,938.85x = 7,014,554,767.47
  5. Step 5: Solve for x
    x = 7,014,554,767.47/92,938.85
  6. Step 6: Final answer
    x = 75,474.95

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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.