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Finding the Fourth Proportional to 293,570.69, 405,120.67 and 172,719.74

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Solution

The fourth proportional to 293,570.69, 405,120.67 and 172,719.74 is: 238,349.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,570.69 : 405,120.67 = 172,719.74 : x
  2. Step 2: Convert to fraction form
    293,570.69/405,120.67 = 172,719.74/x
  3. Step 3: Cross multiply
    293,570.69x = 405,120.67 × 172,719.74
  4. Step 4: Simplify right side
    293,570.69x = 69,972,336,791.03
  5. Step 5: Solve for x
    x = 69,972,336,791.03/293,570.69
  6. Step 6: Final answer
    x = 238,349.19

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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.