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Finding the Fourth Proportional to 354,183.28, 488,783.31 and 193,048.78

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Solution

The fourth proportional to 354,183.28, 488,783.31 and 193,048.78 is: 266,412.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,183.28 : 488,783.31 = 193,048.78 : x
  2. Step 2: Convert to fraction form
    354,183.28/488,783.31 = 193,048.78/x
  3. Step 3: Cross multiply
    354,183.28x = 488,783.31 × 193,048.78
  4. Step 4: Simplify right side
    354,183.28x = 94,359,021,679.86
  5. Step 5: Solve for x
    x = 94,359,021,679.86/354,183.28
  6. Step 6: Final answer
    x = 266,412.98

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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.