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Finding the Third Proportional to 469.75 and 710.75

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Solution

The third proportional to 469.75 and 710.75 is: 1,075.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.75 : 710.75 = 710.75 : x
  2. Step 2: Convert to fraction form
    469.75/710.75 = 710.75/x
  3. Step 3: Cross multiply
    469.75x = 710.75 × 710.75
  4. Step 4: Simplify right side
    469.75x = 505,165.56
  5. Step 5: Solve for x
    x = 505,165.56/469.75
  6. Step 6: Final answer
    x = 1,075.39

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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.