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Finding the Fourth Proportional to 7,231,166.58, 9,978,982.50 and 3,968,035.91

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Solution

The fourth proportional to 7,231,166.58, 9,978,982.50 and 3,968,035.91 is: 5,475,874.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,231,166.58 : 9,978,982.50 = 3,968,035.91 : x
  2. Step 2: Convert to fraction form
    7,231,166.58/9,978,982.50 = 3,968,035.91/x
  3. Step 3: Cross multiply
    7,231,166.58x = 9,978,982.50 × 3,968,035.91
  4. Step 4: Simplify right side
    7,231,166.58x = 39,596,960,905,261.58
  5. Step 5: Solve for x
    x = 39,596,960,905,261.58/7,231,166.58
  6. Step 6: Final answer
    x = 5,475,874.53

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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.