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Finding the Fourth Proportional to 70,679.60, 106,019.46 and 33,212.20

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Solution

The fourth proportional to 70,679.60, 106,019.46 and 33,212.20 is: 49,818.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,679.60 : 106,019.46 = 33,212.20 : x
  2. Step 2: Convert to fraction form
    70,679.60/106,019.46 = 33,212.20/x
  3. Step 3: Cross multiply
    70,679.60x = 106,019.46 × 33,212.20
  4. Step 4: Simplify right side
    70,679.60x = 3,521,139,509.41
  5. Step 5: Solve for x
    x = 3,521,139,509.41/70,679.60
  6. Step 6: Final answer
    x = 49,818.33

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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.