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Finding the Fourth Proportional to 311,785,964.60, 437,216,986.60 and 311,785,964.60

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Solution

The fourth proportional to 311,785,964.60, 437,216,986.60 and 311,785,964.60 is: 437,216,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,785,964.60 : 437,216,986.60 = 311,785,964.60 : x
  2. Step 2: Convert to fraction form
    311,785,964.60/437,216,986.60 = 311,785,964.60/x
  3. Step 3: Cross multiply
    311,785,964.60x = 437,216,986.60 × 311,785,964.60
  4. Step 4: Simplify right side
    311,785,964.60x = 136,318,119,906,586,288
  5. Step 5: Solve for x
    x = 136,318,119,906,586,288/311,785,964.60
  6. Step 6: Final answer
    x = 437,216,986.60

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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.