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Finding the Fourth Proportional to 347,910.76, 521,656.62 and 189,919.72

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Solution

The fourth proportional to 347,910.76, 521,656.62 and 189,919.72 is: 284,765.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,910.76 : 521,656.62 = 189,919.72 : x
  2. Step 2: Convert to fraction form
    347,910.76/521,656.62 = 189,919.72/x
  3. Step 3: Cross multiply
    347,910.76x = 521,656.62 × 189,919.72
  4. Step 4: Simplify right side
    347,910.76x = 99,072,879,206.55
  5. Step 5: Solve for x
    x = 99,072,879,206.55/347,910.76
  6. Step 6: Final answer
    x = 284,765.21

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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.