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Finding the Fourth Proportional to 8,832.31, 13,229.93 and 7,172.01

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Solution

The fourth proportional to 8,832.31, 13,229.93 and 7,172.01 is: 10,742.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,832.31 : 13,229.93 = 7,172.01 : x
  2. Step 2: Convert to fraction form
    8,832.31/13,229.93 = 7,172.01/x
  3. Step 3: Cross multiply
    8,832.31x = 13,229.93 × 7,172.01
  4. Step 4: Simplify right side
    8,832.31x = 94,885,208.19
  5. Step 5: Solve for x
    x = 94,885,208.19/8,832.31
  6. Step 6: Final answer
    x = 10,742.97

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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.