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Finding the Fourth Proportional to 127,166.40, 190,749.60 and 77,344.20

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Solution

The fourth proportional to 127,166.40, 190,749.60 and 77,344.20 is: 116,016.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,166.40 : 190,749.60 = 77,344.20 : x
  2. Step 2: Convert to fraction form
    127,166.40/190,749.60 = 77,344.20/x
  3. Step 3: Cross multiply
    127,166.40x = 190,749.60 × 77,344.20
  4. Step 4: Simplify right side
    127,166.40x = 14,753,375,212.32
  5. Step 5: Solve for x
    x = 14,753,375,212.32/127,166.40
  6. Step 6: Final answer
    x = 116,016.30

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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.