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Finding the Fourth Proportional to 162,865.20, 244,211.40 and 57,687.60

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Solution

The fourth proportional to 162,865.20, 244,211.40 and 57,687.60 is: 86,500.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,865.20 : 244,211.40 = 57,687.60 : x
  2. Step 2: Convert to fraction form
    162,865.20/244,211.40 = 57,687.60/x
  3. Step 3: Cross multiply
    162,865.20x = 244,211.40 × 57,687.60
  4. Step 4: Simplify right side
    162,865.20x = 14,087,969,558.64
  5. Step 5: Solve for x
    x = 14,087,969,558.64/162,865.20
  6. Step 6: Final answer
    x = 86,500.80

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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.