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Finding the Fourth Proportional to 1,576,663, 2,175,794.94 and 861,271

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Solution

The fourth proportional to 1,576,663, 2,175,794.94 and 861,271 is: 1,188,553.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576,663 : 2,175,794.94 = 861,271 : x
  2. Step 2: Convert to fraction form
    1,576,663/2,175,794.94 = 861,271/x
  3. Step 3: Cross multiply
    1,576,663x = 2,175,794.94 × 861,271
  4. Step 4: Simplify right side
    1,576,663x = 1,873,949,083,768.74
  5. Step 5: Solve for x
    x = 1,873,949,083,768.74/1,576,663
  6. Step 6: Final answer
    x = 1,188,553.98

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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.