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Finding the Fourth Proportional to 453,078.43, 679,614.60 and 153,769.72

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Solution

The fourth proportional to 453,078.43, 679,614.60 and 153,769.72 is: 230,653.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,078.43 : 679,614.60 = 153,769.72 : x
  2. Step 2: Convert to fraction form
    453,078.43/679,614.60 = 153,769.72/x
  3. Step 3: Cross multiply
    453,078.43x = 679,614.60 × 153,769.72
  4. Step 4: Simplify right side
    453,078.43x = 104,504,146,749.91
  5. Step 5: Solve for x
    x = 104,504,146,749.91/453,078.43
  6. Step 6: Final answer
    x = 230,653.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.