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Finding the Fourth Proportional to 269,656,710.40, 404,485,065.60 and 262,098,438.40

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Solution

The fourth proportional to 269,656,710.40, 404,485,065.60 and 262,098,438.40 is: 393,147,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,656,710.40 : 404,485,065.60 = 262,098,438.40 : x
  2. Step 2: Convert to fraction form
    269,656,710.40/404,485,065.60 = 262,098,438.40/x
  3. Step 3: Cross multiply
    269,656,710.40x = 404,485,065.60 × 262,098,438.40
  4. Step 4: Simplify right side
    269,656,710.40x = 106,014,904,049,881,568
  5. Step 5: Solve for x
    x = 106,014,904,049,881,568/269,656,710.40
  6. Step 6: Final answer
    x = 393,147,657.60

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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.