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Finding the Third Proportional to 9,640 and 14,700

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Solution

The third proportional to 9,640 and 14,700 is: 22,415.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,640 : 14,700 = 14,700 : x
  2. Step 2: Convert to fraction form
    9,640/14,700 = 14,700/x
  3. Step 3: Cross multiply
    9,640x = 14,700 × 14,700
  4. Step 4: Simplify right side
    9,640x = 216,090,000
  5. Step 5: Solve for x
    x = 216,090,000/9,640
  6. Step 6: Final answer
    x = 22,415.98

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.