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Finding the Fourth Proportional to 113,086.80, 169,630.20 and 73,720.80

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Solution

The fourth proportional to 113,086.80, 169,630.20 and 73,720.80 is: 110,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,086.80 : 169,630.20 = 73,720.80 : x
  2. Step 2: Convert to fraction form
    113,086.80/169,630.20 = 73,720.80/x
  3. Step 3: Cross multiply
    113,086.80x = 169,630.20 × 73,720.80
  4. Step 4: Simplify right side
    113,086.80x = 12,505,274,048.16
  5. Step 5: Solve for x
    x = 12,505,274,048.16/113,086.80
  6. Step 6: Final answer
    x = 110,581.20

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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.