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Finding the Fourth Proportional to 256,536.96, 354,021.48 and 143,359.71

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Solution

The fourth proportional to 256,536.96, 354,021.48 and 143,359.71 is: 197,836.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,536.96 : 354,021.48 = 143,359.71 : x
  2. Step 2: Convert to fraction form
    256,536.96/354,021.48 = 143,359.71/x
  3. Step 3: Cross multiply
    256,536.96x = 354,021.48 × 143,359.71
  4. Step 4: Simplify right side
    256,536.96x = 50,752,416,706.57
  5. Step 5: Solve for x
    x = 50,752,416,706.57/256,536.96
  6. Step 6: Final answer
    x = 197,836.67

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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.