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Finding the Fourth Proportional to 55,201.70, 82,802.55 and 48,640.70

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Solution

The fourth proportional to 55,201.70, 82,802.55 and 48,640.70 is: 72,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,201.70 : 82,802.55 = 48,640.70 : x
  2. Step 2: Convert to fraction form
    55,201.70/82,802.55 = 48,640.70/x
  3. Step 3: Cross multiply
    55,201.70x = 82,802.55 × 48,640.70
  4. Step 4: Simplify right side
    55,201.70x = 4,027,573,993.79
  5. Step 5: Solve for x
    x = 4,027,573,993.79/55,201.70
  6. Step 6: Final answer
    x = 72,961.05

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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.