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Finding the Fourth Proportional to 624,230.28, 861,345.42 and 379,087.56

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Solution

The fourth proportional to 624,230.28, 861,345.42 and 379,087.56 is: 523,084.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,230.28 : 861,345.42 = 379,087.56 : x
  2. Step 2: Convert to fraction form
    624,230.28/861,345.42 = 379,087.56/x
  3. Step 3: Cross multiply
    624,230.28x = 861,345.42 × 379,087.56
  4. Step 4: Simplify right side
    624,230.28x = 326,525,333,584.98
  5. Step 5: Solve for x
    x = 326,525,333,584.98/624,230.28
  6. Step 6: Final answer
    x = 523,084.74

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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.