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Finding the Fourth Proportional to 139,076.79, 208,631.46 and 44,273.76

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Solution

The fourth proportional to 139,076.79, 208,631.46 and 44,273.76 is: 66,415.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,076.79 : 208,631.46 = 44,273.76 : x
  2. Step 2: Convert to fraction form
    139,076.79/208,631.46 = 44,273.76/x
  3. Step 3: Cross multiply
    139,076.79x = 208,631.46 × 44,273.76
  4. Step 4: Simplify right side
    139,076.79x = 9,236,898,572.15
  5. Step 5: Solve for x
    x = 9,236,898,572.15/139,076.79
  6. Step 6: Final answer
    x = 66,415.82

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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.