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Finding the Fourth Proportional to 12,217,793.83, 16,858,728.07 and 6,989,971.68

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Solution

The fourth proportional to 12,217,793.83, 16,858,728.07 and 6,989,971.68 is: 9,645,115.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217,793.83 : 16,858,728.07 = 6,989,971.68 : x
  2. Step 2: Convert to fraction form
    12,217,793.83/16,858,728.07 = 6,989,971.68/x
  3. Step 3: Cross multiply
    12,217,793.83x = 16,858,728.07 × 6,989,971.68
  4. Step 4: Simplify right side
    12,217,793.83x = 117,842,031,752,646.11
  5. Step 5: Solve for x
    x = 117,842,031,752,646.11/12,217,793.83
  6. Step 6: Final answer
    x = 9,645,115.43

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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.