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Finding the Fourth Proportional to 485,762.81, 670,353.29 and 267,966.56

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Solution

The fourth proportional to 485,762.81, 670,353.29 and 267,966.56 is: 369,794.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,762.81 : 670,353.29 = 267,966.56 : x
  2. Step 2: Convert to fraction form
    485,762.81/670,353.29 = 267,966.56/x
  3. Step 3: Cross multiply
    485,762.81x = 670,353.29 × 267,966.56
  4. Step 4: Simplify right side
    485,762.81x = 179,632,260,414.38
  5. Step 5: Solve for x
    x = 179,632,260,414.38/485,762.81
  6. Step 6: Final answer
    x = 369,794.18

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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.