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Finding the Fourth Proportional to 325,086.64, 448,438.96 and 189,105.28

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Solution

The fourth proportional to 325,086.64, 448,438.96 and 189,105.28 is: 260,860.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,086.64 : 448,438.96 = 189,105.28 : x
  2. Step 2: Convert to fraction form
    325,086.64/448,438.96 = 189,105.28/x
  3. Step 3: Cross multiply
    325,086.64x = 448,438.96 × 189,105.28
  4. Step 4: Simplify right side
    325,086.64x = 84,802,175,093.71
  5. Step 5: Solve for x
    x = 84,802,175,093.71/325,086.64
  6. Step 6: Final answer
    x = 260,860.23

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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.