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Finding the Fourth Proportional to 48,761.70, 73,102.05 and 20,703.30

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Solution

The fourth proportional to 48,761.70, 73,102.05 and 20,703.30 is: 31,037.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,761.70 : 73,102.05 = 20,703.30 : x
  2. Step 2: Convert to fraction form
    48,761.70/73,102.05 = 20,703.30/x
  3. Step 3: Cross multiply
    48,761.70x = 73,102.05 × 20,703.30
  4. Step 4: Simplify right side
    48,761.70x = 1,513,453,671.77
  5. Step 5: Solve for x
    x = 1,513,453,671.77/48,761.70
  6. Step 6: Final answer
    x = 31,037.75

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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.