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Finding the Fourth Proportional to 1,331,793, 1,997,689.50 and 397,905

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Solution

The fourth proportional to 1,331,793, 1,997,689.50 and 397,905 is: 596,857.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,793 : 1,997,689.50 = 397,905 : x
  2. Step 2: Convert to fraction form
    1,331,793/1,997,689.50 = 397,905/x
  3. Step 3: Cross multiply
    1,331,793x = 1,997,689.50 × 397,905
  4. Step 4: Simplify right side
    1,331,793x = 794,890,640,497.50
  5. Step 5: Solve for x
    x = 794,890,640,497.50/1,331,793
  6. Step 6: Final answer
    x = 596,857.50

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Similar ratio
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1.5x scale

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.