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Finding the Fourth Proportional to 364,621.80, 547,124.67 and 187,128.66

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Solution

The fourth proportional to 364,621.80, 547,124.67 and 187,128.66 is: 280,791.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,621.80 : 547,124.67 = 187,128.66 : x
  2. Step 2: Convert to fraction form
    364,621.80/547,124.67 = 187,128.66/x
  3. Step 3: Cross multiply
    364,621.80x = 547,124.67 × 187,128.66
  4. Step 4: Simplify right side
    364,621.80x = 102,382,706,350.04
  5. Step 5: Solve for x
    x = 102,382,706,350.04/364,621.80
  6. Step 6: Final answer
    x = 280,791.51

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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.