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Finding the Fourth Proportional to 72,773.20, 109,093.80 and 26,015.20

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Solution

The fourth proportional to 72,773.20, 109,093.80 and 26,015.20 is: 38,999.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,773.20 : 109,093.80 = 26,015.20 : x
  2. Step 2: Convert to fraction form
    72,773.20/109,093.80 = 26,015.20/x
  3. Step 3: Cross multiply
    72,773.20x = 109,093.80 × 26,015.20
  4. Step 4: Simplify right side
    72,773.20x = 2,838,097,025.76
  5. Step 5: Solve for x
    x = 2,838,097,025.76/72,773.20
  6. Step 6: Final answer
    x = 38,999.21

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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.