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Finding the Third Proportional to 43,920 and 64,368

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Solution

The third proportional to 43,920 and 64,368 is: 94,336.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,920 : 64,368 = 64,368 : x
  2. Step 2: Convert to fraction form
    43,920/64,368 = 64,368/x
  3. Step 3: Cross multiply
    43,920x = 64,368 × 64,368
  4. Step 4: Simplify right side
    43,920x = 4,143,239,424
  5. Step 5: Solve for x
    x = 4,143,239,424/43,920
  6. Step 6: Final answer
    x = 94,336.05

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.