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Finding the Fourth Proportional to 84,992.65, 117,289.98 and 47,266.90

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Solution

The fourth proportional to 84,992.65, 117,289.98 and 47,266.90 is: 65,228.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,992.65 : 117,289.98 = 47,266.90 : x
  2. Step 2: Convert to fraction form
    84,992.65/117,289.98 = 47,266.90/x
  3. Step 3: Cross multiply
    84,992.65x = 117,289.98 × 47,266.90
  4. Step 4: Simplify right side
    84,992.65x = 5,543,933,519.33
  5. Step 5: Solve for x
    x = 5,543,933,519.33/84,992.65
  6. Step 6: Final answer
    x = 65,228.39

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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.