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Finding the Fourth Proportional to 168,937.33, 253,405.99 and 77,743.53

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Solution

The fourth proportional to 168,937.33, 253,405.99 and 77,743.53 is: 116,615.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,937.33 : 253,405.99 = 77,743.53 : x
  2. Step 2: Convert to fraction form
    168,937.33/253,405.99 = 77,743.53/x
  3. Step 3: Cross multiply
    168,937.33x = 253,405.99 × 77,743.53
  4. Step 4: Simplify right side
    168,937.33x = 19,700,676,185.74
  5. Step 5: Solve for x
    x = 19,700,676,185.74/168,937.33
  6. Step 6: Final answer
    x = 116,615.29

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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.