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Finding the Fourth Proportional to 492,831.73, 739,134.60 and 137,881.63

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Solution

The fourth proportional to 492,831.73, 739,134.60 and 137,881.63 is: 206,790.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,831.73 : 739,134.60 = 137,881.63 : x
  2. Step 2: Convert to fraction form
    492,831.73/739,134.60 = 137,881.63/x
  3. Step 3: Cross multiply
    492,831.73x = 739,134.60 × 137,881.63
  4. Step 4: Simplify right side
    492,831.73x = 101,913,083,437.40
  5. Step 5: Solve for x
    x = 101,913,083,437.40/492,831.73
  6. Step 6: Final answer
    x = 206,790.83

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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.