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Finding the Fourth Proportional to 21,699.15, 32,548.73 and 7,844.91

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Solution

The fourth proportional to 21,699.15, 32,548.73 and 7,844.91 is: 11,767.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,699.15 : 32,548.73 = 7,844.91 : x
  2. Step 2: Convert to fraction form
    21,699.15/32,548.73 = 7,844.91/x
  3. Step 3: Cross multiply
    21,699.15x = 32,548.73 × 7,844.91
  4. Step 4: Simplify right side
    21,699.15x = 255,341,857.46
  5. Step 5: Solve for x
    x = 255,341,857.46/21,699.15
  6. Step 6: Final answer
    x = 11,767.37

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Similar ratio
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1.5x scale

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.