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Finding the Third Proportional to 718.50 and 1,035

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Solution

The third proportional to 718.50 and 1,035 is: 1,490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.50 : 1,035 = 1,035 : x
  2. Step 2: Convert to fraction form
    718.50/1,035 = 1,035/x
  3. Step 3: Cross multiply
    718.50x = 1,035 × 1,035
  4. Step 4: Simplify right side
    718.50x = 1,071,225
  5. Step 5: Solve for x
    x = 1,071,225/718.50
  6. Step 6: Final answer
    x = 1,490.92

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.