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Finding the Fourth Proportional to 127,892.28, 191,893.68 and 68,658.78

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Solution

The fourth proportional to 127,892.28, 191,893.68 and 68,658.78 is: 103,017.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,892.28 : 191,893.68 = 68,658.78 : x
  2. Step 2: Convert to fraction form
    127,892.28/191,893.68 = 68,658.78/x
  3. Step 3: Cross multiply
    127,892.28x = 191,893.68 × 68,658.78
  4. Step 4: Simplify right side
    127,892.28x = 13,175,185,958.51
  5. Step 5: Solve for x
    x = 13,175,185,958.51/127,892.28
  6. Step 6: Final answer
    x = 103,017.84

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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.