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Finding the Third Proportional to 970.50 and 2,085

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Solution

The third proportional to 970.50 and 2,085 is: 4,479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    970.50 : 2,085 = 2,085 : x
  2. Step 2: Convert to fraction form
    970.50/2,085 = 2,085/x
  3. Step 3: Cross multiply
    970.50x = 2,085 × 2,085
  4. Step 4: Simplify right side
    970.50x = 4,347,225
  5. Step 5: Solve for x
    x = 4,347,225/970.50
  6. Step 6: Final answer
    x = 4,479.37

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.