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Finding the Fourth Proportional to 531,115.97, 796,909.46 and 278,336.37

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Solution

The fourth proportional to 531,115.97, 796,909.46 and 278,336.37 is: 417,627.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,115.97 : 796,909.46 = 278,336.37 : x
  2. Step 2: Convert to fraction form
    531,115.97/796,909.46 = 278,336.37/x
  3. Step 3: Cross multiply
    531,115.97x = 796,909.46 × 278,336.37
  4. Step 4: Simplify right side
    531,115.97x = 221,808,886,315.06
  5. Step 5: Solve for x
    x = 221,808,886,315.06/531,115.97
  6. Step 6: Final answer
    x = 417,627.97

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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.