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Finding the Fourth Proportional to 157,667.12, 217,581.24 and 86,048.75

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Solution

The fourth proportional to 157,667.12, 217,581.24 and 86,048.75 is: 118,747.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,667.12 : 217,581.24 = 86,048.75 : x
  2. Step 2: Convert to fraction form
    157,667.12/217,581.24 = 86,048.75/x
  3. Step 3: Cross multiply
    157,667.12x = 217,581.24 × 86,048.75
  4. Step 4: Simplify right side
    157,667.12x = 18,722,593,725.45
  5. Step 5: Solve for x
    x = 18,722,593,725.45/157,667.12
  6. Step 6: Final answer
    x = 118,747.61

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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.