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Finding the Fourth Proportional to 158,309.20, 237,809.40 and 111,653.20

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Solution

The fourth proportional to 158,309.20, 237,809.40 and 111,653.20 is: 167,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,309.20 : 237,809.40 = 111,653.20 : x
  2. Step 2: Convert to fraction form
    158,309.20/237,809.40 = 111,653.20/x
  3. Step 3: Cross multiply
    158,309.20x = 237,809.40 × 111,653.20
  4. Step 4: Simplify right side
    158,309.20x = 26,552,180,500.08
  5. Step 5: Solve for x
    x = 26,552,180,500.08/158,309.20
  6. Step 6: Final answer
    x = 167,723.55

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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.