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Finding the Fourth Proportional to 20,292.93, 30,292.99 and 19,383.20

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Solution

The fourth proportional to 20,292.93, 30,292.99 and 19,383.20 is: 28,934.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.93 : 30,292.99 = 19,383.20 : x
  2. Step 2: Convert to fraction form
    20,292.93/30,292.99 = 19,383.20/x
  3. Step 3: Cross multiply
    20,292.93x = 30,292.99 × 19,383.20
  4. Step 4: Simplify right side
    20,292.93x = 587,174,997.44
  5. Step 5: Solve for x
    x = 587,174,997.44/20,292.93
  6. Step 6: Final answer
    x = 28,934.95

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.