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Finding the Fourth Proportional to 20,754,434.30, 31,131,651.45 and 20,754,434.30

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Solution

The fourth proportional to 20,754,434.30, 31,131,651.45 and 20,754,434.30 is: 31,131,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,434.30 : 31,131,651.45 = 20,754,434.30 : x
  2. Step 2: Convert to fraction form
    20,754,434.30/31,131,651.45 = 20,754,434.30/x
  3. Step 3: Cross multiply
    20,754,434.30x = 31,131,651.45 × 20,754,434.30
  4. Step 4: Simplify right side
    20,754,434.30x = 646,119,814,669,524.75
  5. Step 5: Solve for x
    x = 646,119,814,669,524.75/20,754,434.30
  6. Step 6: Final answer
    x = 31,131,651.45

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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.