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Finding the Fourth Proportional to 291,044.48, 401,635.44 and 170,257.28

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Solution

The fourth proportional to 291,044.48, 401,635.44 and 170,257.28 is: 234,951.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,044.48 : 401,635.44 = 170,257.28 : x
  2. Step 2: Convert to fraction form
    291,044.48/401,635.44 = 170,257.28/x
  3. Step 3: Cross multiply
    291,044.48x = 401,635.44 × 170,257.28
  4. Step 4: Simplify right side
    291,044.48x = 68,381,357,566.00
  5. Step 5: Solve for x
    x = 68,381,357,566.00/291,044.48
  6. Step 6: Final answer
    x = 234,951.57

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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.