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Finding the Fourth Proportional to 69,460.79, 95,855.91 and 40,774.79

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Solution

The fourth proportional to 69,460.79, 95,855.91 and 40,774.79 is: 56,269.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,460.79 : 95,855.91 = 40,774.79 : x
  2. Step 2: Convert to fraction form
    69,460.79/95,855.91 = 40,774.79/x
  3. Step 3: Cross multiply
    69,460.79x = 95,855.91 × 40,774.79
  4. Step 4: Simplify right side
    69,460.79x = 3,908,504,687.24
  5. Step 5: Solve for x
    x = 3,908,504,687.24/69,460.79
  6. Step 6: Final answer
    x = 56,269.22

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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.