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Finding the Fourth Proportional to 356,453.19, 491,905.31 and 195,314.36

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Solution

The fourth proportional to 356,453.19, 491,905.31 and 195,314.36 is: 269,533.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,453.19 : 491,905.31 = 195,314.36 : x
  2. Step 2: Convert to fraction form
    356,453.19/491,905.31 = 195,314.36/x
  3. Step 3: Cross multiply
    356,453.19x = 491,905.31 × 195,314.36
  4. Step 4: Simplify right side
    356,453.19x = 96,076,167,367.15
  5. Step 5: Solve for x
    x = 96,076,167,367.15/356,453.19
  6. Step 6: Final answer
    x = 269,533.76

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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.