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Finding the Fourth Proportional to 419,219.37, 631,653.75 and 345,979.98

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Solution

The fourth proportional to 419,219.37, 631,653.75 and 345,979.98 is: 521,301.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,219.37 : 631,653.75 = 345,979.98 : x
  2. Step 2: Convert to fraction form
    419,219.37/631,653.75 = 345,979.98/x
  3. Step 3: Cross multiply
    419,219.37x = 631,653.75 × 345,979.98
  4. Step 4: Simplify right side
    419,219.37x = 218,539,551,791.93
  5. Step 5: Solve for x
    x = 218,539,551,791.93/419,219.37
  6. Step 6: Final answer
    x = 521,301.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.