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Finding the Fourth Proportional to 384,611.28, 576,900.18 and 118,398.84

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Solution

The fourth proportional to 384,611.28, 576,900.18 and 118,398.84 is: 177,593.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,611.28 : 576,900.18 = 118,398.84 : x
  2. Step 2: Convert to fraction form
    384,611.28/576,900.18 = 118,398.84/x
  3. Step 3: Cross multiply
    384,611.28x = 576,900.18 × 118,398.84
  4. Step 4: Simplify right side
    384,611.28x = 68,304,312,107.79
  5. Step 5: Solve for x
    x = 68,304,312,107.79/384,611.28
  6. Step 6: Final answer
    x = 177,593.11

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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.