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Finding the Third Proportional to 135,978.75 and 294,556.50

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Solution

The third proportional to 135,978.75 and 294,556.50 is: 638,066.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,978.75 : 294,556.50 = 294,556.50 : x
  2. Step 2: Convert to fraction form
    135,978.75/294,556.50 = 294,556.50/x
  3. Step 3: Cross multiply
    135,978.75x = 294,556.50 × 294,556.50
  4. Step 4: Simplify right side
    135,978.75x = 86,763,531,692.25
  5. Step 5: Solve for x
    x = 86,763,531,692.25/135,978.75
  6. Step 6: Final answer
    x = 638,066.84

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.