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Finding the Fourth Proportional to 139,745.29, 209,588.54 and 44,983.95

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Solution

The fourth proportional to 139,745.29, 209,588.54 and 44,983.95 is: 67,466.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,745.29 : 209,588.54 = 44,983.95 : x
  2. Step 2: Convert to fraction form
    139,745.29/209,588.54 = 44,983.95/x
  3. Step 3: Cross multiply
    139,745.29x = 209,588.54 × 44,983.95
  4. Step 4: Simplify right side
    139,745.29x = 9,428,120,403.93
  5. Step 5: Solve for x
    x = 9,428,120,403.93/139,745.29
  6. Step 6: Final answer
    x = 67,466.46

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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.