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Finding the Fourth Proportional to 13,305,645.20, 19,958,467.80 and 13,305,645.20

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Solution

The fourth proportional to 13,305,645.20, 19,958,467.80 and 13,305,645.20 is: 19,958,467.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305,645.20 : 19,958,467.80 = 13,305,645.20 : x
  2. Step 2: Convert to fraction form
    13,305,645.20/19,958,467.80 = 13,305,645.20/x
  3. Step 3: Cross multiply
    13,305,645.20x = 19,958,467.80 × 13,305,645.20
  4. Step 4: Simplify right side
    13,305,645.20x = 265,560,291,282,424.56
  5. Step 5: Solve for x
    x = 265,560,291,282,424.56/13,305,645.20
  6. Step 6: Final answer
    x = 19,958,467.80

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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.