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Finding the Fourth Proportional to 22,107.96, 30,509.48 and 12,548.48

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Solution

The fourth proportional to 22,107.96, 30,509.48 and 12,548.48 is: 17,317.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,107.96 : 30,509.48 = 12,548.48 : x
  2. Step 2: Convert to fraction form
    22,107.96/30,509.48 = 12,548.48/x
  3. Step 3: Cross multiply
    22,107.96x = 30,509.48 × 12,548.48
  4. Step 4: Simplify right side
    22,107.96x = 382,847,599.59
  5. Step 5: Solve for x
    x = 382,847,599.59/22,107.96
  6. Step 6: Final answer
    x = 17,317.18

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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.