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Finding the Fourth Proportional to 235,208.78, 324,588.50 and 127,778.90

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Solution

The fourth proportional to 235,208.78, 324,588.50 and 127,778.90 is: 176,335.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,208.78 : 324,588.50 = 127,778.90 : x
  2. Step 2: Convert to fraction form
    235,208.78/324,588.50 = 127,778.90/x
  3. Step 3: Cross multiply
    235,208.78x = 324,588.50 × 127,778.90
  4. Step 4: Simplify right side
    235,208.78x = 41,475,561,525.79
  5. Step 5: Solve for x
    x = 41,475,561,525.79/235,208.78
  6. Step 6: Final answer
    x = 176,335.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.