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Finding the Fourth Proportional to 3,990,476.82, 5,985,715.30 and 957,842.68

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Solution

The fourth proportional to 3,990,476.82, 5,985,715.30 and 957,842.68 is: 1,436,764.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,476.82 : 5,985,715.30 = 957,842.68 : x
  2. Step 2: Convert to fraction form
    3,990,476.82/5,985,715.30 = 957,842.68/x
  3. Step 3: Cross multiply
    3,990,476.82x = 5,985,715.30 × 957,842.68
  4. Step 4: Simplify right side
    3,990,476.82x = 5,733,373,584,669.00
  5. Step 5: Solve for x
    x = 5,733,373,584,669.00/3,990,476.82
  6. Step 6: Final answer
    x = 1,436,764.04

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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.