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Finding the Fourth Proportional to 623.63, 935.45 and 190.79

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Solution

The fourth proportional to 623.63, 935.45 and 190.79 is: 286.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.63 : 935.45 = 190.79 : x
  2. Step 2: Convert to fraction form
    623.63/935.45 = 190.79/x
  3. Step 3: Cross multiply
    623.63x = 935.45 × 190.79
  4. Step 4: Simplify right side
    623.63x = 178,473.10
  5. Step 5: Solve for x
    x = 178,473.10/623.63
  6. Step 6: Final answer
    x = 286.18

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