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Finding the Fourth Proportional to 256,087.76, 384,131.43 and 66,532.23

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Solution

The fourth proportional to 256,087.76, 384,131.43 and 66,532.23 is: 99,798.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,087.76 : 384,131.43 = 66,532.23 : x
  2. Step 2: Convert to fraction form
    256,087.76/384,131.43 = 66,532.23/x
  3. Step 3: Cross multiply
    256,087.76x = 384,131.43 × 66,532.23
  4. Step 4: Simplify right side
    256,087.76x = 25,557,120,650.99
  5. Step 5: Solve for x
    x = 25,557,120,650.99/256,087.76
  6. Step 6: Final answer
    x = 99,798.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.