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Finding the Fourth Proportional to 529.42, 792.77 and 346.28

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Solution

The fourth proportional to 529.42, 792.77 and 346.28 is: 518.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.42 : 792.77 = 346.28 : x
  2. Step 2: Convert to fraction form
    529.42/792.77 = 346.28/x
  3. Step 3: Cross multiply
    529.42x = 792.77 × 346.28
  4. Step 4: Simplify right side
    529.42x = 274,520.40
  5. Step 5: Solve for x
    x = 274,520.40/529.42
  6. Step 6: Final answer
    x = 518.53

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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.