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Finding the Fourth Proportional to 619,629.55, 855,173.84 and 347,713.46

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Solution

The fourth proportional to 619,629.55, 855,173.84 and 347,713.46 is: 479,892.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,629.55 : 855,173.84 = 347,713.46 : x
  2. Step 2: Convert to fraction form
    619,629.55/855,173.84 = 347,713.46/x
  3. Step 3: Cross multiply
    619,629.55x = 855,173.84 × 347,713.46
  4. Step 4: Simplify right side
    619,629.55x = 297,355,452,000.35
  5. Step 5: Solve for x
    x = 297,355,452,000.35/619,629.55
  6. Step 6: Final answer
    x = 479,892.31

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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.