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Finding the Fourth Proportional to 228,785.46, 315,742.83 and 126,842.90

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Solution

The fourth proportional to 228,785.46, 315,742.83 and 126,842.90 is: 175,053.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,785.46 : 315,742.83 = 126,842.90 : x
  2. Step 2: Convert to fraction form
    228,785.46/315,742.83 = 126,842.90/x
  3. Step 3: Cross multiply
    228,785.46x = 315,742.83 × 126,842.90
  4. Step 4: Simplify right side
    228,785.46x = 40,049,735,227.27
  5. Step 5: Solve for x
    x = 40,049,735,227.27/228,785.46
  6. Step 6: Final answer
    x = 175,053.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.