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Finding the Fourth Proportional to 621,528.28, 932,339.42 and 172,243.96

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Solution

The fourth proportional to 621,528.28, 932,339.42 and 172,243.96 is: 258,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,528.28 : 932,339.42 = 172,243.96 : x
  2. Step 2: Convert to fraction form
    621,528.28/932,339.42 = 172,243.96/x
  3. Step 3: Cross multiply
    621,528.28x = 932,339.42 × 172,243.96
  4. Step 4: Simplify right side
    621,528.28x = 160,589,833,764.90
  5. Step 5: Solve for x
    x = 160,589,833,764.90/621,528.28
  6. Step 6: Final answer
    x = 258,378.97

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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.