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Finding the Third Proportional to 43,780.50 and 69,417

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Solution

The third proportional to 43,780.50 and 69,417 is: 110,065.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,780.50 : 69,417 = 69,417 : x
  2. Step 2: Convert to fraction form
    43,780.50/69,417 = 69,417/x
  3. Step 3: Cross multiply
    43,780.50x = 69,417 × 69,417
  4. Step 4: Simplify right side
    43,780.50x = 4,818,719,889
  5. Step 5: Solve for x
    x = 4,818,719,889/43,780.50
  6. Step 6: Final answer
    x = 110,065.44

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.