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Finding the Fourth Proportional to 127,912.80, 191,924.40 and 68,679.24

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Solution

The fourth proportional to 127,912.80, 191,924.40 and 68,679.24 is: 103,048.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,912.80 : 191,924.40 = 68,679.24 : x
  2. Step 2: Convert to fraction form
    127,912.80/191,924.40 = 68,679.24/x
  3. Step 3: Cross multiply
    127,912.80x = 191,924.40 × 68,679.24
  4. Step 4: Simplify right side
    127,912.80x = 13,181,221,929.46
  5. Step 5: Solve for x
    x = 13,181,221,929.46/127,912.80
  6. Step 6: Final answer
    x = 103,048.50

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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.