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Finding the Fourth Proportional to 2,811,999, 4,218,717.78 and 817,455

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Solution

The fourth proportional to 2,811,999, 4,218,717.78 and 817,455 is: 1,226,391.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811,999 : 4,218,717.78 = 817,455 : x
  2. Step 2: Convert to fraction form
    2,811,999/4,218,717.78 = 817,455/x
  3. Step 3: Cross multiply
    2,811,999x = 4,218,717.78 × 817,455
  4. Step 4: Simplify right side
    2,811,999x = 3,448,611,942,849.90
  5. Step 5: Solve for x
    x = 3,448,611,942,849.90/2,811,999
  6. Step 6: Final answer
    x = 1,226,391.60

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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.