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Finding the Fourth Proportional to 372,906.20, 559,359.30 and 123,588.20

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Solution

The fourth proportional to 372,906.20, 559,359.30 and 123,588.20 is: 185,382.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,906.20 : 559,359.30 = 123,588.20 : x
  2. Step 2: Convert to fraction form
    372,906.20/559,359.30 = 123,588.20/x
  3. Step 3: Cross multiply
    372,906.20x = 559,359.30 × 123,588.20
  4. Step 4: Simplify right side
    372,906.20x = 69,130,209,040.26
  5. Step 5: Solve for x
    x = 69,130,209,040.26/372,906.20
  6. Step 6: Final answer
    x = 185,382.30

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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.