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Finding the Fourth Proportional to 386,676.57, 580,079.10 and 162,053.90

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Solution

The fourth proportional to 386,676.57, 580,079.10 and 162,053.90 is: 243,107.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,676.57 : 580,079.10 = 162,053.90 : x
  2. Step 2: Convert to fraction form
    386,676.57/580,079.10 = 162,053.90/x
  3. Step 3: Cross multiply
    386,676.57x = 580,079.10 × 162,053.90
  4. Step 4: Simplify right side
    386,676.57x = 94,004,077,563.09
  5. Step 5: Solve for x
    x = 94,004,077,563.09/386,676.57
  6. Step 6: Final answer
    x = 243,107.77

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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.