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Finding the Fourth Proportional to 256,595.34, 354,112.38 and 143,418

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Solution

The fourth proportional to 256,595.34, 354,112.38 and 143,418 is: 197,922.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,595.34 : 354,112.38 = 143,418 : x
  2. Step 2: Convert to fraction form
    256,595.34/354,112.38 = 143,418/x
  3. Step 3: Cross multiply
    256,595.34x = 354,112.38 × 143,418
  4. Step 4: Simplify right side
    256,595.34x = 50,786,089,314.84
  5. Step 5: Solve for x
    x = 50,786,089,314.84/256,595.34
  6. Step 6: Final answer
    x = 197,922.88

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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.