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Finding the Fourth Proportional to 13,188,311.40, 19,782,467.10 and 13,188,311.40

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Solution

The fourth proportional to 13,188,311.40, 19,782,467.10 and 13,188,311.40 is: 19,782,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,311.40 : 19,782,467.10 = 13,188,311.40 : x
  2. Step 2: Convert to fraction form
    13,188,311.40/19,782,467.10 = 13,188,311.40/x
  3. Step 3: Cross multiply
    13,188,311.40x = 19,782,467.10 × 13,188,311.40
  4. Step 4: Simplify right side
    13,188,311.40x = 260,897,336,375,054.97
  5. Step 5: Solve for x
    x = 260,897,336,375,054.97/13,188,311.40
  6. Step 6: Final answer
    x = 19,782,467.10

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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.