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Finding the Fourth Proportional to 16,699.36, 25,051.77 and 7,931.31

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Solution

The fourth proportional to 16,699.36, 25,051.77 and 7,931.31 is: 11,898.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,699.36 : 25,051.77 = 7,931.31 : x
  2. Step 2: Convert to fraction form
    16,699.36/25,051.77 = 7,931.31/x
  3. Step 3: Cross multiply
    16,699.36x = 25,051.77 × 7,931.31
  4. Step 4: Simplify right side
    16,699.36x = 198,693,353.92
  5. Step 5: Solve for x
    x = 198,693,353.92/16,699.36
  6. Step 6: Final answer
    x = 11,898.26

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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.