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Finding the Fourth Proportional to 127,959.56, 191,939.36 and 65,590.28

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Solution

The fourth proportional to 127,959.56, 191,939.36 and 65,590.28 is: 98,385.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,959.56 : 191,939.36 = 65,590.28 : x
  2. Step 2: Convert to fraction form
    127,959.56/191,939.36 = 65,590.28/x
  3. Step 3: Cross multiply
    127,959.56x = 191,939.36 × 65,590.28
  4. Step 4: Simplify right side
    127,959.56x = 12,589,356,365.42
  5. Step 5: Solve for x
    x = 12,589,356,365.42/127,959.56
  6. Step 6: Final answer
    x = 98,385.43

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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.