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Finding the Fourth Proportional to 127,876.20, 191,468.70 and 100,228.20

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Solution

The fourth proportional to 127,876.20, 191,468.70 and 100,228.20 is: 150,071.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,876.20 : 191,468.70 = 100,228.20 : x
  2. Step 2: Convert to fraction form
    127,876.20/191,468.70 = 100,228.20/x
  3. Step 3: Cross multiply
    127,876.20x = 191,468.70 × 100,228.20
  4. Step 4: Simplify right side
    127,876.20x = 19,190,563,157.34
  5. Step 5: Solve for x
    x = 19,190,563,157.34/127,876.20
  6. Step 6: Final answer
    x = 150,071.42

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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.