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Finding the Third Proportional to 39,388 and 61,000

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Solution

The third proportional to 39,388 and 61,000 is: 94,470.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,388 : 61,000 = 61,000 : x
  2. Step 2: Convert to fraction form
    39,388/61,000 = 61,000/x
  3. Step 3: Cross multiply
    39,388x = 61,000 × 61,000
  4. Step 4: Simplify right side
    39,388x = 3,721,000,000
  5. Step 5: Solve for x
    x = 3,721,000,000/39,388
  6. Step 6: Final answer
    x = 94,470.40

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.