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Finding the Fourth Proportional to 381,702.40, 572,553.60 and 195,078.40

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Solution

The fourth proportional to 381,702.40, 572,553.60 and 195,078.40 is: 292,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,702.40 : 572,553.60 = 195,078.40 : x
  2. Step 2: Convert to fraction form
    381,702.40/572,553.60 = 195,078.40/x
  3. Step 3: Cross multiply
    381,702.40x = 572,553.60 × 195,078.40
  4. Step 4: Simplify right side
    381,702.40x = 111,692,840,202.24
  5. Step 5: Solve for x
    x = 111,692,840,202.24/381,702.40
  6. Step 6: Final answer
    x = 292,617.60

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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.