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Finding the Fourth Proportional to 328,958.50, 453,989.11 and 261,531.92

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Solution

The fourth proportional to 328,958.50, 453,989.11 and 261,531.92 is: 360,935.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,958.50 : 453,989.11 = 261,531.92 : x
  2. Step 2: Convert to fraction form
    328,958.50/453,989.11 = 261,531.92/x
  3. Step 3: Cross multiply
    328,958.50x = 453,989.11 × 261,531.92
  4. Step 4: Simplify right side
    328,958.50x = 118,732,643,597.39
  5. Step 5: Solve for x
    x = 118,732,643,597.39/328,958.50
  6. Step 6: Final answer
    x = 360,935.02

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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.