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Finding the Fourth Proportional to 631,524.38, 871,493.46 and 345,038.32

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Solution

The fourth proportional to 631,524.38, 871,493.46 and 345,038.32 is: 476,147.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,524.38 : 871,493.46 = 345,038.32 : x
  2. Step 2: Convert to fraction form
    631,524.38/871,493.46 = 345,038.32/x
  3. Step 3: Cross multiply
    631,524.38x = 871,493.46 × 345,038.32
  4. Step 4: Simplify right side
    631,524.38x = 300,698,633,246.73
  5. Step 5: Solve for x
    x = 300,698,633,246.73/631,524.38
  6. Step 6: Final answer
    x = 476,147.31

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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.