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Finding the Fourth Proportional to 356,421.91, 491,862.22 and 195,283.06

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Solution

The fourth proportional to 356,421.91, 491,862.22 and 195,283.06 is: 269,490.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,421.91 : 491,862.22 = 195,283.06 : x
  2. Step 2: Convert to fraction form
    356,421.91/491,862.22 = 195,283.06/x
  3. Step 3: Cross multiply
    356,421.91x = 491,862.22 × 195,283.06
  4. Step 4: Simplify right side
    356,421.91x = 96,052,359,419.99
  5. Step 5: Solve for x
    x = 96,052,359,419.99/356,421.91
  6. Step 6: Final answer
    x = 269,490.61

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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.