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Finding the Fourth Proportional to 269,490,811.39, 404,268,487.98 and 82,720,290.12

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Solution

The fourth proportional to 269,490,811.39, 404,268,487.98 and 82,720,290.12 is: 124,090,340.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,490,811.39 : 404,268,487.98 = 82,720,290.12 : x
  2. Step 2: Convert to fraction form
    269,490,811.39/404,268,487.98 = 82,720,290.12/x
  3. Step 3: Cross multiply
    269,490,811.39x = 404,268,487.98 × 82,720,290.12
  4. Step 4: Simplify right side
    269,490,811.39x = 33,441,206,610,253,120
  5. Step 5: Solve for x
    x = 33,441,206,610,253,120/269,490,811.39
  6. Step 6: Final answer
    x = 124,090,340.74

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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.