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Finding the Fourth Proportional to 522,091.55, 783,137.95 and 143,015.56

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Solution

The fourth proportional to 522,091.55, 783,137.95 and 143,015.56 is: 214,523.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,091.55 : 783,137.95 = 143,015.56 : x
  2. Step 2: Convert to fraction form
    522,091.55/783,137.95 = 143,015.56/x
  3. Step 3: Cross multiply
    522,091.55x = 783,137.95 × 143,015.56
  4. Step 4: Simplify right side
    522,091.55x = 112,000,910,161.12
  5. Step 5: Solve for x
    x = 112,000,910,161.12/522,091.55
  6. Step 6: Final answer
    x = 214,523.51

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Double scale
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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.