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Finding the Fourth Proportional to 572,850.81, 790,446.30 and 331,086.76

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Solution

The fourth proportional to 572,850.81, 790,446.30 and 331,086.76 is: 456,848.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,850.81 : 790,446.30 = 331,086.76 : x
  2. Step 2: Convert to fraction form
    572,850.81/790,446.30 = 331,086.76/x
  3. Step 3: Cross multiply
    572,850.81x = 790,446.30 × 331,086.76
  4. Step 4: Simplify right side
    572,850.81x = 261,706,304,420.99
  5. Step 5: Solve for x
    x = 261,706,304,420.99/572,850.81
  6. Step 6: Final answer
    x = 456,848.97

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Double scale
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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.