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Finding the Fourth Proportional to 7,008,897.69, 9,672,764.34 and 3,912,025.22

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Solution

The fourth proportional to 7,008,897.69, 9,672,764.34 and 3,912,025.22 is: 5,398,865.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,008,897.69 : 9,672,764.34 = 3,912,025.22 : x
  2. Step 2: Convert to fraction form
    7,008,897.69/9,672,764.34 = 3,912,025.22/x
  3. Step 3: Cross multiply
    7,008,897.69x = 9,672,764.34 × 3,912,025.22
  4. Step 4: Simplify right side
    7,008,897.69x = 37,840,097,977,272.71
  5. Step 5: Solve for x
    x = 37,840,097,977,272.71/7,008,897.69
  6. Step 6: Final answer
    x = 5,398,865.79

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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.