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Finding the Fourth Proportional to 127,892.28, 191,854.80 and 68,646.72

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Solution

The fourth proportional to 127,892.28, 191,854.80 and 68,646.72 is: 102,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,892.28 : 191,854.80 = 68,646.72 : x
  2. Step 2: Convert to fraction form
    127,892.28/191,854.80 = 68,646.72/x
  3. Step 3: Cross multiply
    127,892.28x = 191,854.80 × 68,646.72
  4. Step 4: Simplify right side
    127,892.28x = 13,170,202,736.26
  5. Step 5: Solve for x
    x = 13,170,202,736.26/127,892.28
  6. Step 6: Final answer
    x = 102,978.87

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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.