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Finding the Fourth Proportional to 347,873.60, 521,119.20 and 189,819.20

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Solution

The fourth proportional to 347,873.60, 521,119.20 and 189,819.20 is: 284,351.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,873.60 : 521,119.20 = 189,819.20 : x
  2. Step 2: Convert to fraction form
    347,873.60/521,119.20 = 189,819.20/x
  3. Step 3: Cross multiply
    347,873.60x = 521,119.20 × 189,819.20
  4. Step 4: Simplify right side
    347,873.60x = 98,918,429,648.64
  5. Step 5: Solve for x
    x = 98,918,429,648.64/347,873.60
  6. Step 6: Final answer
    x = 284,351.64

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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.