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Finding the Fourth Proportional to 70,998.67, 106,479.76 and 21,066.96

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Solution

The fourth proportional to 70,998.67, 106,479.76 and 21,066.96 is: 31,595.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,998.67 : 106,479.76 = 21,066.96 : x
  2. Step 2: Convert to fraction form
    70,998.67/106,479.76 = 21,066.96/x
  3. Step 3: Cross multiply
    70,998.67x = 106,479.76 × 21,066.96
  4. Step 4: Simplify right side
    70,998.67x = 2,243,204,844.73
  5. Step 5: Solve for x
    x = 2,243,204,844.73/70,998.67
  6. Step 6: Final answer
    x = 31,595.03

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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.