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Finding the Fourth Proportional to 453,613.44, 679,642.56 and 320,255.04

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Solution

The fourth proportional to 453,613.44, 679,642.56 and 320,255.04 is: 479,833.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,613.44 : 679,642.56 = 320,255.04 : x
  2. Step 2: Convert to fraction form
    453,613.44/679,642.56 = 320,255.04/x
  3. Step 3: Cross multiply
    453,613.44x = 679,642.56 × 320,255.04
  4. Step 4: Simplify right side
    453,613.44x = 217,658,955,238.50
  5. Step 5: Solve for x
    x = 217,658,955,238.50/453,613.44
  6. Step 6: Final answer
    x = 479,833.57

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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.