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Finding the Fourth Proportional to 8,515,658.62, 11,749,854.63 and 4,893,286.78

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Solution

The fourth proportional to 8,515,658.62, 11,749,854.63 and 4,893,286.78 is: 6,751,727.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515,658.62 : 11,749,854.63 = 4,893,286.78 : x
  2. Step 2: Convert to fraction form
    8,515,658.62/11,749,854.63 = 4,893,286.78/x
  3. Step 3: Cross multiply
    8,515,658.62x = 11,749,854.63 × 4,893,286.78
  4. Step 4: Simplify right side
    8,515,658.62x = 57,495,408,327,900.80
  5. Step 5: Solve for x
    x = 57,495,408,327,900.80/8,515,658.62
  6. Step 6: Final answer
    x = 6,751,727.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.