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Finding the Fourth Proportional to 103,626.40, 155,236.22 and 53,739.11

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Solution

The fourth proportional to 103,626.40, 155,236.22 and 53,739.11 is: 80,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,626.40 : 155,236.22 = 53,739.11 : x
  2. Step 2: Convert to fraction form
    103,626.40/155,236.22 = 53,739.11/x
  3. Step 3: Cross multiply
    103,626.40x = 155,236.22 × 53,739.11
  4. Step 4: Simplify right side
    103,626.40x = 8,342,256,302.56
  5. Step 5: Solve for x
    x = 8,342,256,302.56/103,626.40
  6. Step 6: Final answer
    x = 80,503.20

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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.