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Finding the Fourth Proportional to 223,683.87, 308,674.45 and 121,709.73

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Solution

The fourth proportional to 223,683.87, 308,674.45 and 121,709.73 is: 167,954.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,683.87 : 308,674.45 = 121,709.73 : x
  2. Step 2: Convert to fraction form
    223,683.87/308,674.45 = 121,709.73/x
  3. Step 3: Cross multiply
    223,683.87x = 308,674.45 × 121,709.73
  4. Step 4: Simplify right side
    223,683.87x = 37,568,683,663.12
  5. Step 5: Solve for x
    x = 37,568,683,663.12/223,683.87
  6. Step 6: Final answer
    x = 167,954.37

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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.