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Finding the Fourth Proportional to 28,699.72, 43,052.06 and 7,923.22

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Solution

The fourth proportional to 28,699.72, 43,052.06 and 7,923.22 is: 11,885.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,699.72 : 43,052.06 = 7,923.22 : x
  2. Step 2: Convert to fraction form
    28,699.72/43,052.06 = 7,923.22/x
  3. Step 3: Cross multiply
    28,699.72x = 43,052.06 × 7,923.22
  4. Step 4: Simplify right side
    28,699.72x = 341,110,942.83
  5. Step 5: Solve for x
    x = 341,110,942.83/28,699.72
  6. Step 6: Final answer
    x = 11,885.51

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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.