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Finding the Fourth Proportional to 531,093.80, 796,640.70 and 131,731.40

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Solution

The fourth proportional to 531,093.80, 796,640.70 and 131,731.40 is: 197,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,093.80 : 796,640.70 = 131,731.40 : x
  2. Step 2: Convert to fraction form
    531,093.80/796,640.70 = 131,731.40/x
  3. Step 3: Cross multiply
    531,093.80x = 796,640.70 × 131,731.40
  4. Step 4: Simplify right side
    531,093.80x = 104,942,594,707.98
  5. Step 5: Solve for x
    x = 104,942,594,707.98/531,093.80
  6. Step 6: Final answer
    x = 197,597.10

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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.