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Finding the Fourth Proportional to 431,901.11, 647,574.08 and 179,355.87

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Solution

The fourth proportional to 431,901.11, 647,574.08 and 179,355.87 is: 268,918.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,901.11 : 647,574.08 = 179,355.87 : x
  2. Step 2: Convert to fraction form
    431,901.11/647,574.08 = 179,355.87/x
  3. Step 3: Cross multiply
    431,901.11x = 647,574.08 × 179,355.87
  4. Step 4: Simplify right side
    431,901.11x = 116,146,211,611.07
  5. Step 5: Solve for x
    x = 116,146,211,611.07/431,901.11
  6. Step 6: Final answer
    x = 268,918.53

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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.