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Finding the Fourth Proportional to 127,079.70, 190,695.15 and 48,201.90

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Solution

The fourth proportional to 127,079.70, 190,695.15 and 48,201.90 is: 72,331.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,079.70 : 190,695.15 = 48,201.90 : x
  2. Step 2: Convert to fraction form
    127,079.70/190,695.15 = 48,201.90/x
  3. Step 3: Cross multiply
    127,079.70x = 190,695.15 × 48,201.90
  4. Step 4: Simplify right side
    127,079.70x = 9,191,868,550.79
  5. Step 5: Solve for x
    x = 9,191,868,550.79/127,079.70
  6. Step 6: Final answer
    x = 72,331.53

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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.