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Finding the Fourth Proportional to 92,251.79, 138,243.05 and 40,898.50

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Solution

The fourth proportional to 92,251.79, 138,243.05 and 40,898.50 is: 61,288.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,251.79 : 138,243.05 = 40,898.50 : x
  2. Step 2: Convert to fraction form
    92,251.79/138,243.05 = 40,898.50/x
  3. Step 3: Cross multiply
    92,251.79x = 138,243.05 × 40,898.50
  4. Step 4: Simplify right side
    92,251.79x = 5,653,933,991.37
  5. Step 5: Solve for x
    x = 5,653,933,991.37/92,251.79
  6. Step 6: Final answer
    x = 61,288.07

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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.