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Finding the Fourth Proportional to 372,910.80, 559,366.20 and 123,592.80

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Solution

The fourth proportional to 372,910.80, 559,366.20 and 123,592.80 is: 185,389.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,910.80 : 559,366.20 = 123,592.80 : x
  2. Step 2: Convert to fraction form
    372,910.80/559,366.20 = 123,592.80/x
  3. Step 3: Cross multiply
    372,910.80x = 559,366.20 × 123,592.80
  4. Step 4: Simplify right side
    372,910.80x = 69,133,634,883.36
  5. Step 5: Solve for x
    x = 69,133,634,883.36/372,910.80
  6. Step 6: Final answer
    x = 185,389.20

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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.