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Finding the Fourth Proportional to 321,964.56, 482,791.32 and 134,925.84

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Solution

The fourth proportional to 321,964.56, 482,791.32 and 134,925.84 is: 202,323.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,964.56 : 482,791.32 = 134,925.84 : x
  2. Step 2: Convert to fraction form
    321,964.56/482,791.32 = 134,925.84/x
  3. Step 3: Cross multiply
    321,964.56x = 482,791.32 × 134,925.84
  4. Step 4: Simplify right side
    321,964.56x = 65,141,024,395.71
  5. Step 5: Solve for x
    x = 65,141,024,395.71/321,964.56
  6. Step 6: Final answer
    x = 202,323.59

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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.