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Finding the Fourth Proportional to 139,468.80, 209,203.20 and 44,698.80

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Solution

The fourth proportional to 139,468.80, 209,203.20 and 44,698.80 is: 67,048.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,468.80 : 209,203.20 = 44,698.80 : x
  2. Step 2: Convert to fraction form
    139,468.80/209,203.20 = 44,698.80/x
  3. Step 3: Cross multiply
    139,468.80x = 209,203.20 × 44,698.80
  4. Step 4: Simplify right side
    139,468.80x = 9,351,131,996.16
  5. Step 5: Solve for x
    x = 9,351,131,996.16/139,468.80
  6. Step 6: Final answer
    x = 67,048.20

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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.