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Finding the Third Proportional to 730 and 1,095

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Solution

The third proportional to 730 and 1,095 is: 1,642.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    730 : 1,095 = 1,095 : x
  2. Step 2: Convert to fraction form
    730/1,095 = 1,095/x
  3. Step 3: Cross multiply
    730x = 1,095 × 1,095
  4. Step 4: Simplify right side
    730x = 1,199,025
  5. Step 5: Solve for x
    x = 1,199,025/730
  6. Step 6: Final answer
    x = 1,642.50

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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.