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Finding the Third Proportional to 459.75 and 695.50

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Solution

The third proportional to 459.75 and 695.50 is: 1,052.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.75 : 695.50 = 695.50 : x
  2. Step 2: Convert to fraction form
    459.75/695.50 = 695.50/x
  3. Step 3: Cross multiply
    459.75x = 695.50 × 695.50
  4. Step 4: Simplify right side
    459.75x = 483,720.25
  5. Step 5: Solve for x
    x = 483,720.25/459.75
  6. Step 6: Final answer
    x = 1,052.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.