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Finding the Fourth Proportional to 139,076.66, 208,631.28 and 44,273.63

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Solution

The fourth proportional to 139,076.66, 208,631.28 and 44,273.63 is: 66,415.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,076.66 : 208,631.28 = 44,273.63 : x
  2. Step 2: Convert to fraction form
    139,076.66/208,631.28 = 44,273.63/x
  3. Step 3: Cross multiply
    139,076.66x = 208,631.28 × 44,273.63
  4. Step 4: Simplify right side
    139,076.66x = 9,236,864,097.15
  5. Step 5: Solve for x
    x = 9,236,864,097.15/139,076.66
  6. Step 6: Final answer
    x = 66,415.63

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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.