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Finding the Fourth Proportional to 641,140.48, 961,798.20 and 267,076

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Solution

The fourth proportional to 641,140.48, 961,798.20 and 267,076 is: 400,650.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,140.48 : 961,798.20 = 267,076 : x
  2. Step 2: Convert to fraction form
    641,140.48/961,798.20 = 267,076/x
  3. Step 3: Cross multiply
    641,140.48x = 961,798.20 × 267,076
  4. Step 4: Simplify right side
    641,140.48x = 256,873,216,063.20
  5. Step 5: Solve for x
    x = 256,873,216,063.20/641,140.48
  6. Step 6: Final answer
    x = 400,650.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.