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Finding the Fourth Proportional to 131,796.80, 197,695.20 and 106,913.60

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Solution

The fourth proportional to 131,796.80, 197,695.20 and 106,913.60 is: 160,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,796.80 : 197,695.20 = 106,913.60 : x
  2. Step 2: Convert to fraction form
    131,796.80/197,695.20 = 106,913.60/x
  3. Step 3: Cross multiply
    131,796.80x = 197,695.20 × 106,913.60
  4. Step 4: Simplify right side
    131,796.80x = 21,136,305,534.72
  5. Step 5: Solve for x
    x = 21,136,305,534.72/131,796.80
  6. Step 6: Final answer
    x = 160,370.40

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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.