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Finding the Fourth Proportional to 206,688.70, 310,033.05 and 171,696.70

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Solution

The fourth proportional to 206,688.70, 310,033.05 and 171,696.70 is: 257,545.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,688.70 : 310,033.05 = 171,696.70 : x
  2. Step 2: Convert to fraction form
    206,688.70/310,033.05 = 171,696.70/x
  3. Step 3: Cross multiply
    206,688.70x = 310,033.05 × 171,696.70
  4. Step 4: Simplify right side
    206,688.70x = 53,231,651,575.94
  5. Step 5: Solve for x
    x = 53,231,651,575.94/206,688.70
  6. Step 6: Final answer
    x = 257,545.05

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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.