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Finding the Fourth Proportional to 206,612.48, 309,918.22 and 116,614.40

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Solution

The fourth proportional to 206,612.48, 309,918.22 and 116,614.40 is: 174,921.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,612.48 : 309,918.22 = 116,614.40 : x
  2. Step 2: Convert to fraction form
    206,612.48/309,918.22 = 116,614.40/x
  3. Step 3: Cross multiply
    206,612.48x = 309,918.22 × 116,614.40
  4. Step 4: Simplify right side
    206,612.48x = 36,140,925,433.24
  5. Step 5: Solve for x
    x = 36,140,925,433.24/206,612.48
  6. Step 6: Final answer
    x = 174,921.31

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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.