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Finding the Fourth Proportional to 70,641.14, 105,961.44 and 18,050.54

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Solution

The fourth proportional to 70,641.14, 105,961.44 and 18,050.54 is: 27,075.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,641.14 : 105,961.44 = 18,050.54 : x
  2. Step 2: Convert to fraction form
    70,641.14/105,961.44 = 18,050.54/x
  3. Step 3: Cross multiply
    70,641.14x = 105,961.44 × 18,050.54
  4. Step 4: Simplify right side
    70,641.14x = 1,912,661,211.18
  5. Step 5: Solve for x
    x = 1,912,661,211.18/70,641.14
  6. Step 6: Final answer
    x = 27,075.74

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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.