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Finding the Third Proportional to 42,931 and 93,489.50

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Solution

The third proportional to 42,931 and 93,489.50 is: 203,589.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,931 : 93,489.50 = 93,489.50 : x
  2. Step 2: Convert to fraction form
    42,931/93,489.50 = 93,489.50/x
  3. Step 3: Cross multiply
    42,931x = 93,489.50 × 93,489.50
  4. Step 4: Simplify right side
    42,931x = 8,740,286,610.25
  5. Step 5: Solve for x
    x = 8,740,286,610.25/42,931
  6. Step 6: Final answer
    x = 203,589.17

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.