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Finding the Fourth Proportional to 667,993.12, 1,001,991.71 and 162,554.19

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Solution

The fourth proportional to 667,993.12, 1,001,991.71 and 162,554.19 is: 243,831.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,993.12 : 1,001,991.71 = 162,554.19 : x
  2. Step 2: Convert to fraction form
    667,993.12/1,001,991.71 = 162,554.19/x
  3. Step 3: Cross multiply
    667,993.12x = 1,001,991.71 × 162,554.19
  4. Step 4: Simplify right side
    667,993.12x = 162,877,950,805.77
  5. Step 5: Solve for x
    x = 162,877,950,805.77/667,993.12
  6. Step 6: Final answer
    x = 243,831.78

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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.