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Finding the Fourth Proportional to 356,420.91, 491,860.85 and 195,282.06

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Solution

The fourth proportional to 356,420.91, 491,860.85 and 195,282.06 is: 269,489.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,420.91 : 491,860.85 = 195,282.06 : x
  2. Step 2: Convert to fraction form
    356,420.91/491,860.85 = 195,282.06/x
  3. Step 3: Cross multiply
    356,420.91x = 491,860.85 × 195,282.06
  4. Step 4: Simplify right side
    356,420.91x = 96,051,599,044.94
  5. Step 5: Solve for x
    x = 96,051,599,044.94/356,420.91
  6. Step 6: Final answer
    x = 269,489.24

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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.