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Finding the Fourth Proportional to 250,849.82, 346,172.47 and 137,672.86

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Solution

The fourth proportional to 250,849.82, 346,172.47 and 137,672.86 is: 189,988.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,849.82 : 346,172.47 = 137,672.86 : x
  2. Step 2: Convert to fraction form
    250,849.82/346,172.47 = 137,672.86/x
  3. Step 3: Cross multiply
    250,849.82x = 346,172.47 × 137,672.86
  4. Step 4: Simplify right side
    250,849.82x = 47,658,553,998.16
  5. Step 5: Solve for x
    x = 47,658,553,998.16/250,849.82
  6. Step 6: Final answer
    x = 189,988.39

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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.