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Finding the Fourth Proportional to 6,671,494.88, 9,995,806.80 and 4,478,958.12

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Solution

The fourth proportional to 6,671,494.88, 9,995,806.80 and 4,478,958.12 is: 6,710,759.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671,494.88 : 9,995,806.80 = 4,478,958.12 : x
  2. Step 2: Convert to fraction form
    6,671,494.88/9,995,806.80 = 4,478,958.12/x
  3. Step 3: Cross multiply
    6,671,494.88x = 9,995,806.80 × 4,478,958.12
  4. Step 4: Simplify right side
    6,671,494.88x = 44,770,800,032,811.22
  5. Step 5: Solve for x
    x = 44,770,800,032,811.22/6,671,494.88
  6. Step 6: Final answer
    x = 6,710,759.86

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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.