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Finding the Third Proportional to 970 and 1,316

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Solution

The third proportional to 970 and 1,316 is: 1,785.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    970 : 1,316 = 1,316 : x
  2. Step 2: Convert to fraction form
    970/1,316 = 1,316/x
  3. Step 3: Cross multiply
    970x = 1,316 × 1,316
  4. Step 4: Simplify right side
    970x = 1,731,856
  5. Step 5: Solve for x
    x = 1,731,856/970
  6. Step 6: Final answer
    x = 1,785.42

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.