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Finding the Third Proportional to 703 and 917.50

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Solution

The third proportional to 703 and 917.50 is: 1,197.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    703 : 917.50 = 917.50 : x
  2. Step 2: Convert to fraction form
    703/917.50 = 917.50/x
  3. Step 3: Cross multiply
    703x = 917.50 × 917.50
  4. Step 4: Simplify right side
    703x = 841,806.25
  5. Step 5: Solve for x
    x = 841,806.25/703
  6. Step 6: Final answer
    x = 1,197.45

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.