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Finding the Fourth Proportional to 457,634.44, 631,505.46 and 256,391.56

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Solution

The fourth proportional to 457,634.44, 631,505.46 and 256,391.56 is: 353,803.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,634.44 : 631,505.46 = 256,391.56 : x
  2. Step 2: Convert to fraction form
    457,634.44/631,505.46 = 256,391.56/x
  3. Step 3: Cross multiply
    457,634.44x = 631,505.46 × 256,391.56
  4. Step 4: Simplify right side
    457,634.44x = 161,912,670,037.92
  5. Step 5: Solve for x
    x = 161,912,670,037.92/457,634.44
  6. Step 6: Final answer
    x = 353,803.51

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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.