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Finding the Fourth Proportional to 535.60, 803.74 and 210.92

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Solution

The fourth proportional to 535.60, 803.74 and 210.92 is: 316.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.60 : 803.74 = 210.92 : x
  2. Step 2: Convert to fraction form
    535.60/803.74 = 210.92/x
  3. Step 3: Cross multiply
    535.60x = 803.74 × 210.92
  4. Step 4: Simplify right side
    535.60x = 169,524.84
  5. Step 5: Solve for x
    x = 169,524.84/535.60
  6. Step 6: Final answer
    x = 316.51

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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.