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Finding the Third Proportional to 4,688 and 7,018

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Solution

The third proportional to 4,688 and 7,018 is: 10,506.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,688 : 7,018 = 7,018 : x
  2. Step 2: Convert to fraction form
    4,688/7,018 = 7,018/x
  3. Step 3: Cross multiply
    4,688x = 7,018 × 7,018
  4. Step 4: Simplify right side
    4,688x = 49,252,324
  5. Step 5: Solve for x
    x = 49,252,324/4,688
  6. Step 6: Final answer
    x = 10,506.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.