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Finding the Fourth Proportional to 256,869.99, 354,551.85 and 149,460.80

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Solution

The fourth proportional to 256,869.99, 354,551.85 and 149,460.80 is: 206,297.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,869.99 : 354,551.85 = 149,460.80 : x
  2. Step 2: Convert to fraction form
    256,869.99/354,551.85 = 149,460.80/x
  3. Step 3: Cross multiply
    256,869.99x = 354,551.85 × 149,460.80
  4. Step 4: Simplify right side
    256,869.99x = 52,991,601,369.72
  5. Step 5: Solve for x
    x = 52,991,601,369.72/256,869.99
  6. Step 6: Final answer
    x = 206,297.36

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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.