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Finding the Fourth Proportional to 127,939.50, 191,909.25 and 34,445.25

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Solution

The fourth proportional to 127,939.50, 191,909.25 and 34,445.25 is: 51,667.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,939.50 : 191,909.25 = 34,445.25 : x
  2. Step 2: Convert to fraction form
    127,939.50/191,909.25 = 34,445.25/x
  3. Step 3: Cross multiply
    127,939.50x = 191,909.25 × 34,445.25
  4. Step 4: Simplify right side
    127,939.50x = 6,610,362,093.56
  5. Step 5: Solve for x
    x = 6,610,362,093.56/127,939.50
  6. Step 6: Final answer
    x = 51,667.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.