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Finding the Fourth Proportional to 13,609,101.10, 20,413,651.65 and 12,014,778.10

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Solution

The fourth proportional to 13,609,101.10, 20,413,651.65 and 12,014,778.10 is: 18,022,167.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609,101.10 : 20,413,651.65 = 12,014,778.10 : x
  2. Step 2: Convert to fraction form
    13,609,101.10/20,413,651.65 = 12,014,778.10/x
  3. Step 3: Cross multiply
    13,609,101.10x = 20,413,651.65 × 12,014,778.10
  4. Step 4: Simplify right side
    13,609,101.10x = 245,265,494,785,448.84
  5. Step 5: Solve for x
    x = 245,265,494,785,448.84/13,609,101.10
  6. Step 6: Final answer
    x = 18,022,167.15

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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.