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Finding the Fourth Proportional to 168,760.70, 253,141.05 and 153,986.30

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Solution

The fourth proportional to 168,760.70, 253,141.05 and 153,986.30 is: 230,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,760.70 : 253,141.05 = 153,986.30 : x
  2. Step 2: Convert to fraction form
    168,760.70/253,141.05 = 153,986.30/x
  3. Step 3: Cross multiply
    168,760.70x = 253,141.05 × 153,986.30
  4. Step 4: Simplify right side
    168,760.70x = 38,980,253,667.62
  5. Step 5: Solve for x
    x = 38,980,253,667.62/168,760.70
  6. Step 6: Final answer
    x = 230,979.45

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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.