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Finding the Third Proportional to 48,921 and 107,218.50

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Solution

The third proportional to 48,921 and 107,218.50 is: 234,987.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,921 : 107,218.50 = 107,218.50 : x
  2. Step 2: Convert to fraction form
    48,921/107,218.50 = 107,218.50/x
  3. Step 3: Cross multiply
    48,921x = 107,218.50 × 107,218.50
  4. Step 4: Simplify right side
    48,921x = 11,495,806,742.25
  5. Step 5: Solve for x
    x = 11,495,806,742.25/48,921
  6. Step 6: Final answer
    x = 234,987.16

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.