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Finding the Fourth Proportional to 386,363.20, 579,671.04 and 186,706.56

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Solution

The fourth proportional to 386,363.20, 579,671.04 and 186,706.56 is: 280,120.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,363.20 : 579,671.04 = 186,706.56 : x
  2. Step 2: Convert to fraction form
    386,363.20/579,671.04 = 186,706.56/x
  3. Step 3: Cross multiply
    386,363.20x = 579,671.04 × 186,706.56
  4. Step 4: Simplify right side
    386,363.20x = 108,228,385,810.02
  5. Step 5: Solve for x
    x = 108,228,385,810.02/386,363.20
  6. Step 6: Final answer
    x = 280,120.84

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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.