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Finding the Fourth Proportional to 356,471.74, 491,931.12 and 195,325.48

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Solution

The fourth proportional to 356,471.74, 491,931.12 and 195,325.48 is: 269,549.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,471.74 : 491,931.12 = 195,325.48 : x
  2. Step 2: Convert to fraction form
    356,471.74/491,931.12 = 195,325.48/x
  3. Step 3: Cross multiply
    356,471.74x = 491,931.12 × 195,325.48
  4. Step 4: Simplify right side
    356,471.74x = 96,086,682,140.94
  5. Step 5: Solve for x
    x = 96,086,682,140.94/356,471.74
  6. Step 6: Final answer
    x = 269,549.23

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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.