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Finding the Fourth Proportional to 139,523.20, 209,803.20 and 116,713.60

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Solution

The fourth proportional to 139,523.20, 209,803.20 and 116,713.60 is: 175,504.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,523.20 : 209,803.20 = 116,713.60 : x
  2. Step 2: Convert to fraction form
    139,523.20/209,803.20 = 116,713.60/x
  3. Step 3: Cross multiply
    139,523.20x = 209,803.20 × 116,713.60
  4. Step 4: Simplify right side
    139,523.20x = 24,486,886,763.52
  5. Step 5: Solve for x
    x = 24,486,886,763.52/139,523.20
  6. Step 6: Final answer
    x = 175,504.05

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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.