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Finding the Fourth Proportional to 293,609.78, 405,174.60 and 172,758.89

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Solution

The fourth proportional to 293,609.78, 405,174.60 and 172,758.89 is: 238,403.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,609.78 : 405,174.60 = 172,758.89 : x
  2. Step 2: Convert to fraction form
    293,609.78/405,174.60 = 172,758.89/x
  3. Step 3: Cross multiply
    293,609.78x = 405,174.60 × 172,758.89
  4. Step 4: Simplify right side
    293,609.78x = 69,997,515,165.13
  5. Step 5: Solve for x
    x = 69,997,515,165.13/293,609.78
  6. Step 6: Final answer
    x = 238,403.21

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1.5x scale

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.