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Finding the Fourth Proportional to 561.01, 841.62 and 190.85

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Solution

The fourth proportional to 561.01, 841.62 and 190.85 is: 286.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.01 : 841.62 = 190.85 : x
  2. Step 2: Convert to fraction form
    561.01/841.62 = 190.85/x
  3. Step 3: Cross multiply
    561.01x = 841.62 × 190.85
  4. Step 4: Simplify right side
    561.01x = 160,618.97
  5. Step 5: Solve for x
    x = 160,618.97/561.01
  6. Step 6: Final answer
    x = 286.30

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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.