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Finding the Fourth Proportional to 347,215.68, 479,165.76 and 196,313.76

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Solution

The fourth proportional to 347,215.68, 479,165.76 and 196,313.76 is: 270,917.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,215.68 : 479,165.76 = 196,313.76 : x
  2. Step 2: Convert to fraction form
    347,215.68/479,165.76 = 196,313.76/x
  3. Step 3: Cross multiply
    347,215.68x = 479,165.76 × 196,313.76
  4. Step 4: Simplify right side
    347,215.68x = 94,066,832,008.86
  5. Step 5: Solve for x
    x = 94,066,832,008.86/347,215.68
  6. Step 6: Final answer
    x = 270,917.58

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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.