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Finding the Fourth Proportional to 620,306, 855,614.04 and 447,936.92

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Solution

The fourth proportional to 620,306, 855,614.04 and 447,936.92 is: 617,858.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,306 : 855,614.04 = 447,936.92 : x
  2. Step 2: Convert to fraction form
    620,306/855,614.04 = 447,936.92/x
  3. Step 3: Cross multiply
    620,306x = 855,614.04 × 447,936.92
  4. Step 4: Simplify right side
    620,306x = 383,261,117,786.36
  5. Step 5: Solve for x
    x = 383,261,117,786.36/620,306
  6. Step 6: Final answer
    x = 617,858.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.