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Finding the Fourth Proportional to 2,865,859.78, 3,954,886.36 and 1,576,672.48

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Solution

The fourth proportional to 2,865,859.78, 3,954,886.36 and 1,576,672.48 is: 2,175,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865,859.78 : 3,954,886.36 = 1,576,672.48 : x
  2. Step 2: Convert to fraction form
    2,865,859.78/3,954,886.36 = 1,576,672.48/x
  3. Step 3: Cross multiply
    2,865,859.78x = 3,954,886.36 × 1,576,672.48
  4. Step 4: Simplify right side
    2,865,859.78x = 6,235,560,485,339.37
  5. Step 5: Solve for x
    x = 6,235,560,485,339.37/2,865,859.78
  6. Step 6: Final answer
    x = 2,175,807.95

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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.