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Finding the Fourth Proportional to 167,890.72, 251,879.64 and 74,374.24

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Solution

The fourth proportional to 167,890.72, 251,879.64 and 74,374.24 is: 111,580.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,890.72 : 251,879.64 = 74,374.24 : x
  2. Step 2: Convert to fraction form
    167,890.72/251,879.64 = 74,374.24/x
  3. Step 3: Cross multiply
    167,890.72x = 251,879.64 × 74,374.24
  4. Step 4: Simplify right side
    167,890.72x = 18,733,356,796.47
  5. Step 5: Solve for x
    x = 18,733,356,796.47/167,890.72
  6. Step 6: Final answer
    x = 111,580.66

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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.