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Finding the Third Proportional to 242.25 and 529.75

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Solution

The third proportional to 242.25 and 529.75 is: 1,158.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.25 : 529.75 = 529.75 : x
  2. Step 2: Convert to fraction form
    242.25/529.75 = 529.75/x
  3. Step 3: Cross multiply
    242.25x = 529.75 × 529.75
  4. Step 4: Simplify right side
    242.25x = 280,635.06
  5. Step 5: Solve for x
    x = 280,635.06/242.25
  6. Step 6: Final answer
    x = 1,158.45

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.