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Finding the Fourth Proportional to 218,975.82, 302,357.66 and 171,364.83

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Solution

The fourth proportional to 218,975.82, 302,357.66 and 171,364.83 is: 236,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,975.82 : 302,357.66 = 171,364.83 : x
  2. Step 2: Convert to fraction form
    218,975.82/302,357.66 = 171,364.83/x
  3. Step 3: Cross multiply
    218,975.82x = 302,357.66 × 171,364.83
  4. Step 4: Simplify right side
    218,975.82x = 51,813,468,148.27
  5. Step 5: Solve for x
    x = 51,813,468,148.27/218,975.82
  6. Step 6: Final answer
    x = 236,617.30

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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.