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Finding the Fourth Proportional to 213,586,908.60, 320,380,362.90 and 213,586,908.60

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Solution

The fourth proportional to 213,586,908.60, 320,380,362.90 and 213,586,908.60 is: 320,380,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,586,908.60 : 320,380,362.90 = 213,586,908.60 : x
  2. Step 2: Convert to fraction form
    213,586,908.60/320,380,362.90 = 213,586,908.60/x
  3. Step 3: Cross multiply
    213,586,908.60x = 320,380,362.90 × 213,586,908.60
  4. Step 4: Simplify right side
    213,586,908.60x = 68,429,051,287,957,120
  5. Step 5: Solve for x
    x = 68,429,051,287,957,120/213,586,908.60
  6. Step 6: Final answer
    x = 320,380,362.90

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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.