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Finding the Fourth Proportional to 618.51, 927.92 and 436.26

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Solution

The fourth proportional to 618.51, 927.92 and 436.26 is: 654.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.51 : 927.92 = 436.26 : x
  2. Step 2: Convert to fraction form
    618.51/927.92 = 436.26/x
  3. Step 3: Cross multiply
    618.51x = 927.92 × 436.26
  4. Step 4: Simplify right side
    618.51x = 404,814.50
  5. Step 5: Solve for x
    x = 404,814.50/618.51
  6. Step 6: Final answer
    x = 654.50

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