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Finding the Fourth Proportional to 372,112.80, 558,169.20 and 222,813.60

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Solution

The fourth proportional to 372,112.80, 558,169.20 and 222,813.60 is: 334,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,112.80 : 558,169.20 = 222,813.60 : x
  2. Step 2: Convert to fraction form
    372,112.80/558,169.20 = 222,813.60/x
  3. Step 3: Cross multiply
    372,112.80x = 558,169.20 × 222,813.60
  4. Step 4: Simplify right side
    372,112.80x = 124,367,688,861.12
  5. Step 5: Solve for x
    x = 124,367,688,861.12/372,112.80
  6. Step 6: Final answer
    x = 334,220.40

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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.