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Finding the Fourth Proportional to 1,576,657, 2,175,786.66 and 861,265

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Solution

The fourth proportional to 1,576,657, 2,175,786.66 and 861,265 is: 1,188,545.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576,657 : 2,175,786.66 = 861,265 : x
  2. Step 2: Convert to fraction form
    1,576,657/2,175,786.66 = 861,265/x
  3. Step 3: Cross multiply
    1,576,657x = 2,175,786.66 × 861,265
  4. Step 4: Simplify right side
    1,576,657x = 1,873,928,897,724.90
  5. Step 5: Solve for x
    x = 1,873,928,897,724.90/1,576,657
  6. Step 6: Final answer
    x = 1,188,545.70

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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.