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Finding the Fourth Proportional to 127,313.15, 190,964.86 and 43,079.63

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Solution

The fourth proportional to 127,313.15, 190,964.86 and 43,079.63 is: 64,617.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,313.15 : 190,964.86 = 43,079.63 : x
  2. Step 2: Convert to fraction form
    127,313.15/190,964.86 = 43,079.63/x
  3. Step 3: Cross multiply
    127,313.15x = 190,964.86 × 43,079.63
  4. Step 4: Simplify right side
    127,313.15x = 8,226,694,449.28
  5. Step 5: Solve for x
    x = 8,226,694,449.28/127,313.15
  6. Step 6: Final answer
    x = 64,617.79

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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.