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Finding the Fourth Proportional to 127,179.70, 190,624.41 and 51,229.59

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Solution

The fourth proportional to 127,179.70, 190,624.41 and 51,229.59 is: 76,785.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,179.70 : 190,624.41 = 51,229.59 : x
  2. Step 2: Convert to fraction form
    127,179.70/190,624.41 = 51,229.59/x
  3. Step 3: Cross multiply
    127,179.70x = 190,624.41 × 51,229.59
  4. Step 4: Simplify right side
    127,179.70x = 9,765,610,368.29
  5. Step 5: Solve for x
    x = 9,765,610,368.29/127,179.70
  6. Step 6: Final answer
    x = 76,785.92

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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.