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Finding the Fourth Proportional to 139,326.45, 208,992.39 and 44,574.66

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Solution

The fourth proportional to 139,326.45, 208,992.39 and 44,574.66 is: 66,862.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,326.45 : 208,992.39 = 44,574.66 : x
  2. Step 2: Convert to fraction form
    139,326.45/208,992.39 = 44,574.66/x
  3. Step 3: Cross multiply
    139,326.45x = 208,992.39 × 44,574.66
  4. Step 4: Simplify right side
    139,326.45x = 9,315,764,726.84
  5. Step 5: Solve for x
    x = 9,315,764,726.84/139,326.45
  6. Step 6: Final answer
    x = 66,862.86

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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.