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Finding the Fourth Proportional to 372,173.20, 558,259.80 and 214,709.20

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Solution

The fourth proportional to 372,173.20, 558,259.80 and 214,709.20 is: 322,063.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,173.20 : 558,259.80 = 214,709.20 : x
  2. Step 2: Convert to fraction form
    372,173.20/558,259.80 = 214,709.20/x
  3. Step 3: Cross multiply
    372,173.20x = 558,259.80 × 214,709.20
  4. Step 4: Simplify right side
    372,173.20x = 119,863,515,050.16
  5. Step 5: Solve for x
    x = 119,863,515,050.16/372,173.20
  6. Step 6: Final answer
    x = 322,063.80

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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.