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Finding the Fourth Proportional to 293,483.85, 405,103.91 and 172,618.89

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Solution

The fourth proportional to 293,483.85, 405,103.91 and 172,618.89 is: 238,270.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,483.85 : 405,103.91 = 172,618.89 : x
  2. Step 2: Convert to fraction form
    293,483.85/405,103.91 = 172,618.89/x
  3. Step 3: Cross multiply
    293,483.85x = 405,103.91 × 172,618.89
  4. Step 4: Simplify right side
    293,483.85x = 69,928,586,415.77
  5. Step 5: Solve for x
    x = 69,928,586,415.77/293,483.85
  6. Step 6: Final answer
    x = 238,270.65

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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.