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Finding the Fourth Proportional to 218,509,969.15, 327,764,953.73 and 218,509,969.15

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Solution

The fourth proportional to 218,509,969.15, 327,764,953.73 and 218,509,969.15 is: 327,764,953.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,509,969.15 : 327,764,953.73 = 218,509,969.15 : x
  2. Step 2: Convert to fraction form
    218,509,969.15/327,764,953.73 = 218,509,969.15/x
  3. Step 3: Cross multiply
    218,509,969.15x = 327,764,953.73 × 218,509,969.15
  4. Step 4: Simplify right side
    218,509,969.15x = 71,619,909,927,993,480
  5. Step 5: Solve for x
    x = 71,619,909,927,993,480/218,509,969.15
  6. Step 6: Final answer
    x = 327,764,953.73

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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.