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Finding the Fourth Proportional to 1,576,665, 2,175,797.70 and 861,273

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Solution

The fourth proportional to 1,576,665, 2,175,797.70 and 861,273 is: 1,188,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576,665 : 2,175,797.70 = 861,273 : x
  2. Step 2: Convert to fraction form
    1,576,665/2,175,797.70 = 861,273/x
  3. Step 3: Cross multiply
    1,576,665x = 2,175,797.70 × 861,273
  4. Step 4: Simplify right side
    1,576,665x = 1,873,955,812,472.10
  5. Step 5: Solve for x
    x = 1,873,955,812,472.10/1,576,665
  6. Step 6: Final answer
    x = 1,188,556.74

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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.