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Finding the Fourth Proportional to 528,091.70, 792,137.55 and 261,893.30

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Solution

The fourth proportional to 528,091.70, 792,137.55 and 261,893.30 is: 392,839.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,091.70 : 792,137.55 = 261,893.30 : x
  2. Step 2: Convert to fraction form
    528,091.70/792,137.55 = 261,893.30/x
  3. Step 3: Cross multiply
    528,091.70x = 792,137.55 × 261,893.30
  4. Step 4: Simplify right side
    528,091.70x = 207,455,517,023.42
  5. Step 5: Solve for x
    x = 207,455,517,023.42/528,091.70
  6. Step 6: Final answer
    x = 392,839.95

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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.