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Finding the Fourth Proportional to 531,147.62, 796,719.27 and 215,601.86

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Solution

The fourth proportional to 531,147.62, 796,719.27 and 215,601.86 is: 323,401.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,147.62 : 796,719.27 = 215,601.86 : x
  2. Step 2: Convert to fraction form
    531,147.62/796,719.27 = 215,601.86/x
  3. Step 3: Cross multiply
    531,147.62x = 796,719.27 × 215,601.86
  4. Step 4: Simplify right side
    531,147.62x = 171,774,156,509.84
  5. Step 5: Solve for x
    x = 171,774,156,509.84/531,147.62
  6. Step 6: Final answer
    x = 323,401.91

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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.