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Finding the Fourth Proportional to 667,176.22, 920,701.81 and 361,252.51

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Solution

The fourth proportional to 667,176.22, 920,701.81 and 361,252.51 is: 498,527.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,176.22 : 920,701.81 = 361,252.51 : x
  2. Step 2: Convert to fraction form
    667,176.22/920,701.81 = 361,252.51/x
  3. Step 3: Cross multiply
    667,176.22x = 920,701.81 × 361,252.51
  4. Step 4: Simplify right side
    667,176.22x = 332,605,839,824.04
  5. Step 5: Solve for x
    x = 332,605,839,824.04/667,176.22
  6. Step 6: Final answer
    x = 498,527.72

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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.