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Finding the Fourth Proportional to 223,673.44, 308,783.64 and 172,571.44

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Solution

The fourth proportional to 223,673.44, 308,783.64 and 172,571.44 is: 238,236.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,673.44 : 308,783.64 = 172,571.44 : x
  2. Step 2: Convert to fraction form
    223,673.44/308,783.64 = 172,571.44/x
  3. Step 3: Cross multiply
    223,673.44x = 308,783.64 × 172,571.44
  4. Step 4: Simplify right side
    223,673.44x = 53,287,237,403.24
  5. Step 5: Solve for x
    x = 53,287,237,403.24/223,673.44
  6. Step 6: Final answer
    x = 238,236.77

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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.