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Finding the Fourth Proportional to 215,652.97, 323,479.46 and 82,574.02

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Solution

The fourth proportional to 215,652.97, 323,479.46 and 82,574.02 is: 123,861.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,652.97 : 323,479.46 = 82,574.02 : x
  2. Step 2: Convert to fraction form
    215,652.97/323,479.46 = 82,574.02/x
  3. Step 3: Cross multiply
    215,652.97x = 323,479.46 × 82,574.02
  4. Step 4: Simplify right side
    215,652.97x = 26,710,999,399.63
  5. Step 5: Solve for x
    x = 26,710,999,399.63/215,652.97
  6. Step 6: Final answer
    x = 123,861.03

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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.