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Finding the Fourth Proportional to 356,419.41, 491,858.77 and 195,280.56

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Solution

The fourth proportional to 356,419.41, 491,858.77 and 195,280.56 is: 269,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,419.41 : 491,858.77 = 195,280.56 : x
  2. Step 2: Convert to fraction form
    356,419.41/491,858.77 = 195,280.56/x
  3. Step 3: Cross multiply
    356,419.41x = 491,858.77 × 195,280.56
  4. Step 4: Simplify right side
    356,419.41x = 96,050,456,046.51
  5. Step 5: Solve for x
    x = 96,050,456,046.51/356,419.41
  6. Step 6: Final answer
    x = 269,487.16

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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.