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Finding the Fourth Proportional to 554.11, 831.17 and 188.91

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Solution

The fourth proportional to 554.11, 831.17 and 188.91 is: 283.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.11 : 831.17 = 188.91 : x
  2. Step 2: Convert to fraction form
    554.11/831.17 = 188.91/x
  3. Step 3: Cross multiply
    554.11x = 831.17 × 188.91
  4. Step 4: Simplify right side
    554.11x = 157,016.80
  5. Step 5: Solve for x
    x = 157,016.80/554.11
  6. Step 6: Final answer
    x = 283.37

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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.