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Finding the Fourth Proportional to 13,235,939.90, 19,811,919.45 and 13,235,939.90

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Solution

The fourth proportional to 13,235,939.90, 19,811,919.45 and 13,235,939.90 is: 19,811,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,235,939.90 : 19,811,919.45 = 13,235,939.90 : x
  2. Step 2: Convert to fraction form
    13,235,939.90/19,811,919.45 = 13,235,939.90/x
  3. Step 3: Cross multiply
    13,235,939.90x = 19,811,919.45 × 13,235,939.90
  4. Step 4: Simplify right side
    13,235,939.90x = 262,229,375,143,841.06
  5. Step 5: Solve for x
    x = 262,229,375,143,841.06/13,235,939.90
  6. Step 6: Final answer
    x = 19,811,919.45

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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.