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Finding the Fourth Proportional to 60,785.01, 91,141.49 and 20,789.84

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Solution

The fourth proportional to 60,785.01, 91,141.49 and 20,789.84 is: 31,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,785.01 : 91,141.49 = 20,789.84 : x
  2. Step 2: Convert to fraction form
    60,785.01/91,141.49 = 20,789.84/x
  3. Step 3: Cross multiply
    60,785.01x = 91,141.49 × 20,789.84
  4. Step 4: Simplify right side
    60,785.01x = 1,894,817,274.29
  5. Step 5: Solve for x
    x = 1,894,817,274.29/60,785.01
  6. Step 6: Final answer
    x = 31,172.44

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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.