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Finding the Fourth Proportional to 169,230.78, 253,858.92 and 56,911.32

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Solution

The fourth proportional to 169,230.78, 253,858.92 and 56,911.32 is: 85,371.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,230.78 : 253,858.92 = 56,911.32 : x
  2. Step 2: Convert to fraction form
    169,230.78/253,858.92 = 56,911.32/x
  3. Step 3: Cross multiply
    169,230.78x = 253,858.92 × 56,911.32
  4. Step 4: Simplify right side
    169,230.78x = 14,447,446,230.97
  5. Step 5: Solve for x
    x = 14,447,446,230.97/169,230.78
  6. Step 6: Final answer
    x = 85,371.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.