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Finding the Fourth Proportional to 125,418.44, 188,156.39 and 54,353.01

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Solution

The fourth proportional to 125,418.44, 188,156.39 and 54,353.01 is: 81,541.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,418.44 : 188,156.39 = 54,353.01 : x
  2. Step 2: Convert to fraction form
    125,418.44/188,156.39 = 54,353.01/x
  3. Step 3: Cross multiply
    125,418.44x = 188,156.39 × 54,353.01
  4. Step 4: Simplify right side
    125,418.44x = 10,226,865,981.28
  5. Step 5: Solve for x
    x = 10,226,865,981.28/125,418.44
  6. Step 6: Final answer
    x = 81,541.96

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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.