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Finding the Fourth Proportional to 103,661.56, 155,515.02 and 33,539.86

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Solution

The fourth proportional to 103,661.56, 155,515.02 and 33,539.86 is: 50,317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,661.56 : 155,515.02 = 33,539.86 : x
  2. Step 2: Convert to fraction form
    103,661.56/155,515.02 = 33,539.86/x
  3. Step 3: Cross multiply
    103,661.56x = 155,515.02 × 33,539.86
  4. Step 4: Simplify right side
    103,661.56x = 5,215,951,998.70
  5. Step 5: Solve for x
    x = 5,215,951,998.70/103,661.56
  6. Step 6: Final answer
    x = 50,317.13

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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.