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Finding the Fourth Proportional to 72,688.44, 108,954.30 and 35,169.24

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Solution

The fourth proportional to 72,688.44, 108,954.30 and 35,169.24 is: 52,715.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,688.44 : 108,954.30 = 35,169.24 : x
  2. Step 2: Convert to fraction form
    72,688.44/108,954.30 = 35,169.24/x
  3. Step 3: Cross multiply
    72,688.44x = 108,954.30 × 35,169.24
  4. Step 4: Simplify right side
    72,688.44x = 3,831,839,925.73
  5. Step 5: Solve for x
    x = 3,831,839,925.73/72,688.44
  6. Step 6: Final answer
    x = 52,715.95

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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.