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Finding the Fourth Proportional to 22,153.79, 33,228.18 and 7,919.19

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Solution

The fourth proportional to 22,153.79, 33,228.18 and 7,919.19 is: 11,877.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,153.79 : 33,228.18 = 7,919.19 : x
  2. Step 2: Convert to fraction form
    22,153.79/33,228.18 = 7,919.19/x
  3. Step 3: Cross multiply
    22,153.79x = 33,228.18 × 7,919.19
  4. Step 4: Simplify right side
    22,153.79x = 263,140,270.77
  5. Step 5: Solve for x
    x = 263,140,270.77/22,153.79
  6. Step 6: Final answer
    x = 11,877.89

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.