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Finding the Fourth Proportional to 171,605.79, 236,675.59 and 120,786.75

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Solution

The fourth proportional to 171,605.79, 236,675.59 and 120,786.75 is: 166,586.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,605.79 : 236,675.59 = 120,786.75 : x
  2. Step 2: Convert to fraction form
    171,605.79/236,675.59 = 120,786.75/x
  3. Step 3: Cross multiply
    171,605.79x = 236,675.59 × 120,786.75
  4. Step 4: Simplify right side
    171,605.79x = 28,587,275,018.47
  5. Step 5: Solve for x
    x = 28,587,275,018.47/171,605.79
  6. Step 6: Final answer
    x = 166,586.89

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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.