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Finding the Fourth Proportional to 223,466.71, 308,387.43 and 121,491.94

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Solution

The fourth proportional to 223,466.71, 308,387.43 and 121,491.94 is: 167,660.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,466.71 : 308,387.43 = 121,491.94 : x
  2. Step 2: Convert to fraction form
    223,466.71/308,387.43 = 121,491.94/x
  3. Step 3: Cross multiply
    223,466.71x = 308,387.43 × 121,491.94
  4. Step 4: Simplify right side
    223,466.71x = 37,466,587,142.31
  5. Step 5: Solve for x
    x = 37,466,587,142.31/223,466.71
  6. Step 6: Final answer
    x = 167,660.71

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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.