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Finding the Fourth Proportional to 6,999,469.42, 9,659,842.70 and 3,860,347.10

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Solution

The fourth proportional to 6,999,469.42, 9,659,842.70 and 3,860,347.10 is: 5,327,596.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,999,469.42 : 9,659,842.70 = 3,860,347.10 : x
  2. Step 2: Convert to fraction form
    6,999,469.42/9,659,842.70 = 3,860,347.10/x
  3. Step 3: Cross multiply
    6,999,469.42x = 9,659,842.70 × 3,860,347.10
  4. Step 4: Simplify right side
    6,999,469.42x = 37,290,345,753,401.17
  5. Step 5: Solve for x
    x = 37,290,345,753,401.17/6,999,469.42
  6. Step 6: Final answer
    x = 5,327,596.07

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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.