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Finding the Fourth Proportional to 217,817,694.10, 305,171,519.90 and 217,817,694.10

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Solution

The fourth proportional to 217,817,694.10, 305,171,519.90 and 217,817,694.10 is: 305,171,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,817,694.10 : 305,171,519.90 = 217,817,694.10 : x
  2. Step 2: Convert to fraction form
    217,817,694.10/305,171,519.90 = 217,817,694.10/x
  3. Step 3: Cross multiply
    217,817,694.10x = 305,171,519.90 × 217,817,694.10
  4. Step 4: Simplify right side
    217,817,694.10x = 66,471,756,769,610,256
  5. Step 5: Solve for x
    x = 66,471,756,769,610,256/217,817,694.10
  6. Step 6: Final answer
    x = 305,171,519.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.