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Finding the Fourth Proportional to 206,618.26, 285,111.32 and 115,984.19

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Solution

The fourth proportional to 206,618.26, 285,111.32 and 115,984.19 is: 160,045.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,618.26 : 285,111.32 = 115,984.19 : x
  2. Step 2: Convert to fraction form
    206,618.26/285,111.32 = 115,984.19/x
  3. Step 3: Cross multiply
    206,618.26x = 285,111.32 × 115,984.19
  4. Step 4: Simplify right side
    206,618.26x = 33,068,405,510.03
  5. Step 5: Solve for x
    x = 33,068,405,510.03/206,618.26
  6. Step 6: Final answer
    x = 160,045.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.