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Finding the Fourth Proportional to 619,351.80, 929,027.70 and 198,670.20

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Solution

The fourth proportional to 619,351.80, 929,027.70 and 198,670.20 is: 298,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,351.80 : 929,027.70 = 198,670.20 : x
  2. Step 2: Convert to fraction form
    619,351.80/929,027.70 = 198,670.20/x
  3. Step 3: Cross multiply
    619,351.80x = 929,027.70 × 198,670.20
  4. Step 4: Simplify right side
    619,351.80x = 184,570,118,964.54
  5. Step 5: Solve for x
    x = 184,570,118,964.54/619,351.80
  6. Step 6: Final answer
    x = 298,005.30

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Similar ratio
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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.