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Finding the Fourth Proportional to 293,616.71, 405,171.87 and 172,734.64

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Solution

The fourth proportional to 293,616.71, 405,171.87 and 172,734.64 is: 238,362.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,616.71 : 405,171.87 = 172,734.64 : x
  2. Step 2: Convert to fraction form
    293,616.71/405,171.87 = 172,734.64/x
  3. Step 3: Cross multiply
    293,616.71x = 405,171.87 × 172,734.64
  4. Step 4: Simplify right side
    293,616.71x = 69,987,215,441.89
  5. Step 5: Solve for x
    x = 69,987,215,441.89/293,616.71
  6. Step 6: Final answer
    x = 238,362.51

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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.