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Finding the Fourth Proportional to 223,786.56, 308,833.60 and 121,807.08

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Solution

The fourth proportional to 223,786.56, 308,833.60 and 121,807.08 is: 168,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,786.56 : 308,833.60 = 121,807.08 : x
  2. Step 2: Convert to fraction form
    223,786.56/308,833.60 = 121,807.08/x
  3. Step 3: Cross multiply
    223,786.56x = 308,833.60 × 121,807.08
  4. Step 4: Simplify right side
    223,786.56x = 37,618,119,021.89
  5. Step 5: Solve for x
    x = 37,618,119,021.89/223,786.56
  6. Step 6: Final answer
    x = 168,098.20

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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.