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Finding the Fourth Proportional to 1,576,656, 2,175,785.28 and 861,264

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Solution

The fourth proportional to 1,576,656, 2,175,785.28 and 861,264 is: 1,188,544.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576,656 : 2,175,785.28 = 861,264 : x
  2. Step 2: Convert to fraction form
    1,576,656/2,175,785.28 = 861,264/x
  3. Step 3: Cross multiply
    1,576,656x = 2,175,785.28 × 861,264
  4. Step 4: Simplify right side
    1,576,656x = 1,873,925,533,393.92
  5. Step 5: Solve for x
    x = 1,873,925,533,393.92/1,576,656
  6. Step 6: Final answer
    x = 1,188,544.32

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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.