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Finding the Fourth Proportional to 256,243.55, 353,608.75 and 143,063.87

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Solution

The fourth proportional to 256,243.55, 353,608.75 and 143,063.87 is: 197,424.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,243.55 : 353,608.75 = 143,063.87 : x
  2. Step 2: Convert to fraction form
    256,243.55/353,608.75 = 143,063.87/x
  3. Step 3: Cross multiply
    256,243.55x = 353,608.75 × 143,063.87
  4. Step 4: Simplify right side
    256,243.55x = 50,588,636,240.86
  5. Step 5: Solve for x
    x = 50,588,636,240.86/256,243.55
  6. Step 6: Final answer
    x = 197,424.04

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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.