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Finding the Fourth Proportional to 621,790.62, 932,685.92 and 172,511.56

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Solution

The fourth proportional to 621,790.62, 932,685.92 and 172,511.56 is: 258,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,790.62 : 932,685.92 = 172,511.56 : x
  2. Step 2: Convert to fraction form
    621,790.62/932,685.92 = 172,511.56/x
  3. Step 3: Cross multiply
    621,790.62x = 932,685.92 × 172,511.56
  4. Step 4: Simplify right side
    621,790.62x = 160,899,103,049.24
  5. Step 5: Solve for x
    x = 160,899,103,049.24/621,790.62
  6. Step 6: Final answer
    x = 258,767.34

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1.5x scale

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.