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Finding the Fourth Proportional to 65,808.24, 90,815.39 and 37,133.98

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Solution

The fourth proportional to 65,808.24, 90,815.39 and 37,133.98 is: 51,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,808.24 : 90,815.39 = 37,133.98 : x
  2. Step 2: Convert to fraction form
    65,808.24/90,815.39 = 37,133.98/x
  3. Step 3: Cross multiply
    65,808.24x = 90,815.39 × 37,133.98
  4. Step 4: Simplify right side
    65,808.24x = 3,372,336,691.75
  5. Step 5: Solve for x
    x = 3,372,336,691.75/65,808.24
  6. Step 6: Final answer
    x = 51,244.90

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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.