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Finding the Fourth Proportional to 8,835,556.80, 13,234,672.80 and 7,342,564.80

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Solution

The fourth proportional to 8,835,556.80, 13,234,672.80 and 7,342,564.80 is: 10,998,338.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,835,556.80 : 13,234,672.80 = 7,342,564.80 : x
  2. Step 2: Convert to fraction form
    8,835,556.80/13,234,672.80 = 7,342,564.80/x
  3. Step 3: Cross multiply
    8,835,556.80x = 13,234,672.80 × 7,342,564.80
  4. Step 4: Simplify right side
    8,835,556.80x = 97,176,442,640,797.44
  5. Step 5: Solve for x
    x = 97,176,442,640,797.44/8,835,556.80
  6. Step 6: Final answer
    x = 10,998,338.29

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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.