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Finding the Fourth Proportional to 374,469.30, 516,770.75 and 213,321.83

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Solution

The fourth proportional to 374,469.30, 516,770.75 and 213,321.83 is: 294,385.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,469.30 : 516,770.75 = 213,321.83 : x
  2. Step 2: Convert to fraction form
    374,469.30/516,770.75 = 213,321.83/x
  3. Step 3: Cross multiply
    374,469.30x = 516,770.75 × 213,321.83
  4. Step 4: Simplify right side
    374,469.30x = 110,238,480,029.92
  5. Step 5: Solve for x
    x = 110,238,480,029.92/374,469.30
  6. Step 6: Final answer
    x = 294,385.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.