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Finding the Fourth Proportional to 92,806.52, 128,072.92 and 52,519.56

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Solution

The fourth proportional to 92,806.52, 128,072.92 and 52,519.56 is: 72,476.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,806.52 : 128,072.92 = 52,519.56 : x
  2. Step 2: Convert to fraction form
    92,806.52/128,072.92 = 52,519.56/x
  3. Step 3: Cross multiply
    92,806.52x = 128,072.92 × 52,519.56
  4. Step 4: Simplify right side
    92,806.52x = 6,726,333,406.32
  5. Step 5: Solve for x
    x = 6,726,333,406.32/92,806.52
  6. Step 6: Final answer
    x = 72,476.95

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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.