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Finding the Fourth Proportional to 211,693,542.60, 317,540,313.90 and 211,693,542.60

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Solution

The fourth proportional to 211,693,542.60, 317,540,313.90 and 211,693,542.60 is: 317,540,313.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,693,542.60 : 317,540,313.90 = 211,693,542.60 : x
  2. Step 2: Convert to fraction form
    211,693,542.60/317,540,313.90 = 211,693,542.60/x
  3. Step 3: Cross multiply
    211,693,542.60x = 317,540,313.90 × 211,693,542.60
  4. Step 4: Simplify right side
    211,693,542.60x = 67,221,233,967,807,016
  5. Step 5: Solve for x
    x = 67,221,233,967,807,016/211,693,542.60
  6. Step 6: Final answer
    x = 317,540,313.90

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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.