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Finding the Fourth Proportional to 381,716.40, 572,574.60 and 195,092.40

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Solution

The fourth proportional to 381,716.40, 572,574.60 and 195,092.40 is: 292,638.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,716.40 : 572,574.60 = 195,092.40 : x
  2. Step 2: Convert to fraction form
    381,716.40/572,574.60 = 195,092.40/x
  3. Step 3: Cross multiply
    381,716.40x = 572,574.60 × 195,092.40
  4. Step 4: Simplify right side
    381,716.40x = 111,704,952,893.04
  5. Step 5: Solve for x
    x = 111,704,952,893.04/381,716.40
  6. Step 6: Final answer
    x = 292,638.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.