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Finding the Fourth Proportional to 127,967.21, 191,980.85 and 43,728.07

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Solution

The fourth proportional to 127,967.21, 191,980.85 and 43,728.07 is: 65,602.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,967.21 : 191,980.85 = 43,728.07 : x
  2. Step 2: Convert to fraction form
    127,967.21/191,980.85 = 43,728.07/x
  3. Step 3: Cross multiply
    127,967.21x = 191,980.85 × 43,728.07
  4. Step 4: Simplify right side
    127,967.21x = 8,394,951,348.87
  5. Step 5: Solve for x
    x = 8,394,951,348.87/127,967.21
  6. Step 6: Final answer
    x = 65,602.37

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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.