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Finding the Fourth Proportional to 103,626.55, 155,439.83 and 101,322.55

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Solution

The fourth proportional to 103,626.55, 155,439.83 and 101,322.55 is: 151,983.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,626.55 : 155,439.83 = 101,322.55 : x
  2. Step 2: Convert to fraction form
    103,626.55/155,439.83 = 101,322.55/x
  3. Step 3: Cross multiply
    103,626.55x = 155,439.83 × 101,322.55
  4. Step 4: Simplify right side
    103,626.55x = 15,749,559,947.17
  5. Step 5: Solve for x
    x = 15,749,559,947.17/103,626.55
  6. Step 6: Final answer
    x = 151,983.83

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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.