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Finding the Fourth Proportional to 471,869.56, 650,957.37 and 318,961.13

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Solution

The fourth proportional to 471,869.56, 650,957.37 and 318,961.13 is: 440,015.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,869.56 : 650,957.37 = 318,961.13 : x
  2. Step 2: Convert to fraction form
    471,869.56/650,957.37 = 318,961.13/x
  3. Step 3: Cross multiply
    471,869.56x = 650,957.37 × 318,961.13
  4. Step 4: Simplify right side
    471,869.56x = 207,630,098,317.03
  5. Step 5: Solve for x
    x = 207,630,098,317.03/471,869.56
  6. Step 6: Final answer
    x = 440,015.88

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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.