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Finding the Fourth Proportional to 651,615, 899,228.72 and 396,966

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Solution

The fourth proportional to 651,615, 899,228.72 and 396,966 is: 547,813.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,615 : 899,228.72 = 396,966 : x
  2. Step 2: Convert to fraction form
    651,615/899,228.72 = 396,966/x
  3. Step 3: Cross multiply
    651,615x = 899,228.72 × 396,966
  4. Step 4: Simplify right side
    651,615x = 356,963,228,063.52
  5. Step 5: Solve for x
    x = 356,963,228,063.52/651,615
  6. Step 6: Final answer
    x = 547,813.09

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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.