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Finding the Fourth Proportional to 139,465.76, 209,193.78 and 44,694.55

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Solution

The fourth proportional to 139,465.76, 209,193.78 and 44,694.55 is: 67,040.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,465.76 : 209,193.78 = 44,694.55 : x
  2. Step 2: Convert to fraction form
    139,465.76/209,193.78 = 44,694.55/x
  3. Step 3: Cross multiply
    139,465.76x = 209,193.78 × 44,694.55
  4. Step 4: Simplify right side
    139,465.76x = 9,349,820,813.93
  5. Step 5: Solve for x
    x = 9,349,820,813.93/139,465.76
  6. Step 6: Final answer
    x = 67,040.26

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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.