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Finding the Fourth Proportional to 151,893.80, 209,613.42 and 84,825.80

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Solution

The fourth proportional to 151,893.80, 209,613.42 and 84,825.80 is: 117,059.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,893.80 : 209,613.42 = 84,825.80 : x
  2. Step 2: Convert to fraction form
    151,893.80/209,613.42 = 84,825.80/x
  3. Step 3: Cross multiply
    151,893.80x = 209,613.42 × 84,825.80
  4. Step 4: Simplify right side
    151,893.80x = 17,780,626,042.24
  5. Step 5: Solve for x
    x = 17,780,626,042.24/151,893.80
  6. Step 6: Final answer
    x = 117,059.59

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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.