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Finding the Fourth Proportional to 167,663.37, 251,491.41 and 78,867.66

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Solution

The fourth proportional to 167,663.37, 251,491.41 and 78,867.66 is: 118,299.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,663.37 : 251,491.41 = 78,867.66 : x
  2. Step 2: Convert to fraction form
    167,663.37/251,491.41 = 78,867.66/x
  3. Step 3: Cross multiply
    167,663.37x = 251,491.41 × 78,867.66
  4. Step 4: Simplify right side
    167,663.37x = 19,834,539,016.80
  5. Step 5: Solve for x
    x = 19,834,539,016.80/167,663.37
  6. Step 6: Final answer
    x = 118,299.78

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1.5x scale

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.