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Finding the Fourth Proportional to 139,152.48, 208,745.28 and 44,349.78

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Solution

The fourth proportional to 139,152.48, 208,745.28 and 44,349.78 is: 66,529.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,152.48 : 208,745.28 = 44,349.78 : x
  2. Step 2: Convert to fraction form
    139,152.48/208,745.28 = 44,349.78/x
  3. Step 3: Cross multiply
    139,152.48x = 208,745.28 × 44,349.78
  4. Step 4: Simplify right side
    139,152.48x = 9,257,807,244.04
  5. Step 5: Solve for x
    x = 9,257,807,244.04/139,152.48
  6. Step 6: Final answer
    x = 66,529.95

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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.