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Finding the Fourth Proportional to 21,092.77, 29,107.77 and 11,661.13

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Solution

The fourth proportional to 21,092.77, 29,107.77 and 11,661.13 is: 16,092.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,092.77 : 29,107.77 = 11,661.13 : x
  2. Step 2: Convert to fraction form
    21,092.77/29,107.77 = 11,661.13/x
  3. Step 3: Cross multiply
    21,092.77x = 29,107.77 × 11,661.13
  4. Step 4: Simplify right side
    21,092.77x = 339,429,344.44
  5. Step 5: Solve for x
    x = 339,429,344.44/21,092.77
  6. Step 6: Final answer
    x = 16,092.22

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Half scale
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Double scale
Find fourth proportional to 21,093.77, 29,109.15 and 11,662.13
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.