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Finding the Fourth Proportional to 70,436.96, 105,667.73 and 30,993.05

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Solution

The fourth proportional to 70,436.96, 105,667.73 and 30,993.05 is: 46,494.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,436.96 : 105,667.73 = 30,993.05 : x
  2. Step 2: Convert to fraction form
    70,436.96/105,667.73 = 30,993.05/x
  3. Step 3: Cross multiply
    70,436.96x = 105,667.73 × 30,993.05
  4. Step 4: Simplify right side
    70,436.96x = 3,274,964,555.97
  5. Step 5: Solve for x
    x = 3,274,964,555.97/70,436.96
  6. Step 6: Final answer
    x = 46,494.98

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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.