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Finding the Fourth Proportional to 665,930.92, 919,726.50 and 615,542.44

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Solution

The fourth proportional to 665,930.92, 919,726.50 and 615,542.44 is: 850,134.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,930.92 : 919,726.50 = 615,542.44 : x
  2. Step 2: Convert to fraction form
    665,930.92/919,726.50 = 615,542.44/x
  3. Step 3: Cross multiply
    665,930.92x = 919,726.50 × 615,542.44
  4. Step 4: Simplify right side
    665,930.92x = 566,130,693,942.66
  5. Step 5: Solve for x
    x = 566,130,693,942.66/665,930.92
  6. Step 6: Final answer
    x = 850,134.27

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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.