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Finding the Fourth Proportional to 206,613.01, 285,104.04 and 115,978.94

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Solution

The fourth proportional to 206,613.01, 285,104.04 and 115,978.94 is: 160,038.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,613.01 : 285,104.04 = 115,978.94 : x
  2. Step 2: Convert to fraction form
    206,613.01/285,104.04 = 115,978.94/x
  3. Step 3: Cross multiply
    206,613.01x = 285,104.04 × 115,978.94
  4. Step 4: Simplify right side
    206,613.01x = 33,066,065,061.68
  5. Step 5: Solve for x
    x = 33,066,065,061.68/206,613.01
  6. Step 6: Final answer
    x = 160,038.64

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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.