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Finding the Fourth Proportional to 372,661.20, 558,991.80 and 186,037.20

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Solution

The fourth proportional to 372,661.20, 558,991.80 and 186,037.20 is: 279,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,661.20 : 558,991.80 = 186,037.20 : x
  2. Step 2: Convert to fraction form
    372,661.20/558,991.80 = 186,037.20/x
  3. Step 3: Cross multiply
    372,661.20x = 558,991.80 × 186,037.20
  4. Step 4: Simplify right side
    372,661.20x = 103,993,269,294.96
  5. Step 5: Solve for x
    x = 103,993,269,294.96/372,661.20
  6. Step 6: Final answer
    x = 279,055.80

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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.