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Finding the Fourth Proportional to 1,978,609.92, 2,967,966 and 539,305.20

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Solution

The fourth proportional to 1,978,609.92, 2,967,966 and 539,305.20 is: 808,971.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,609.92 : 2,967,966 = 539,305.20 : x
  2. Step 2: Convert to fraction form
    1,978,609.92/2,967,966 = 539,305.20/x
  3. Step 3: Cross multiply
    1,978,609.92x = 2,967,966 × 539,305.20
  4. Step 4: Simplify right side
    1,978,609.92x = 1,600,639,497,223.20
  5. Step 5: Solve for x
    x = 1,600,639,497,223.20/1,978,609.92
  6. Step 6: Final answer
    x = 808,971.73

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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.