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Finding the Fourth Proportional to 6,662,734.38, 9,998,081.91 and 6,120,659.70

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Solution

The fourth proportional to 6,662,734.38, 9,998,081.91 and 6,120,659.70 is: 9,184,646.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,662,734.38 : 9,998,081.91 = 6,120,659.70 : x
  2. Step 2: Convert to fraction form
    6,662,734.38/9,998,081.91 = 6,120,659.70/x
  3. Step 3: Cross multiply
    6,662,734.38x = 9,998,081.91 × 6,120,659.70
  4. Step 4: Simplify right side
    6,662,734.38x = 61,194,857,023,836.03
  5. Step 5: Solve for x
    x = 61,194,857,023,836.03/6,662,734.38
  6. Step 6: Final answer
    x = 9,184,646.05

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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.