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Finding the Fourth Proportional to 73,912.59, 110,871.32 and 21,322.53

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Solution

The fourth proportional to 73,912.59, 110,871.32 and 21,322.53 is: 31,984.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,912.59 : 110,871.32 = 21,322.53 : x
  2. Step 2: Convert to fraction form
    73,912.59/110,871.32 = 21,322.53/x
  3. Step 3: Cross multiply
    73,912.59x = 110,871.32 × 21,322.53
  4. Step 4: Simplify right side
    73,912.59x = 2,364,056,940.23
  5. Step 5: Solve for x
    x = 2,364,056,940.23/73,912.59
  6. Step 6: Final answer
    x = 31,984.50

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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.