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Finding the Fourth Proportional to 248,294.50, 372,515.19 and 143,188.90

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Solution

The fourth proportional to 248,294.50, 372,515.19 and 143,188.90 is: 214,825.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,294.50 : 372,515.19 = 143,188.90 : x
  2. Step 2: Convert to fraction form
    248,294.50/372,515.19 = 143,188.90/x
  3. Step 3: Cross multiply
    248,294.50x = 372,515.19 × 143,188.90
  4. Step 4: Simplify right side
    248,294.50x = 53,340,040,289.39
  5. Step 5: Solve for x
    x = 53,340,040,289.39/248,294.50
  6. Step 6: Final answer
    x = 214,825.70

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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.