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Finding the Fourth Proportional to 70,615.11, 105,871.33 and 33,155.89

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Solution

The fourth proportional to 70,615.11, 105,871.33 and 33,155.89 is: 49,709.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,615.11 : 105,871.33 = 33,155.89 : x
  2. Step 2: Convert to fraction form
    70,615.11/105,871.33 = 33,155.89/x
  3. Step 3: Cross multiply
    70,615.11x = 105,871.33 × 33,155.89
  4. Step 4: Simplify right side
    70,615.11x = 3,510,258,171.63
  5. Step 5: Solve for x
    x = 3,510,258,171.63/70,615.11
  6. Step 6: Final answer
    x = 49,709.73

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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.