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Finding the Fourth Proportional to 21,809.25, 30,096.77 and 11,873.25

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Solution

The fourth proportional to 21,809.25, 30,096.77 and 11,873.25 is: 16,385.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809.25 : 30,096.77 = 11,873.25 : x
  2. Step 2: Convert to fraction form
    21,809.25/30,096.77 = 11,873.25/x
  3. Step 3: Cross multiply
    21,809.25x = 30,096.77 × 11,873.25
  4. Step 4: Simplify right side
    21,809.25x = 357,346,415.04
  5. Step 5: Solve for x
    x = 357,346,415.04/21,809.25
  6. Step 6: Final answer
    x = 16,385.09

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Half scale
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Double scale
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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.