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Finding the Fourth Proportional to 169,198.10, 253,787.80 and 56,866.72

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Solution

The fourth proportional to 169,198.10, 253,787.80 and 56,866.72 is: 85,296.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,198.10 : 253,787.80 = 56,866.72 : x
  2. Step 2: Convert to fraction form
    169,198.10/253,787.80 = 56,866.72/x
  3. Step 3: Cross multiply
    169,198.10x = 253,787.80 × 56,866.72
  4. Step 4: Simplify right side
    169,198.10x = 14,432,079,762.02
  5. Step 5: Solve for x
    x = 14,432,079,762.02/169,198.10
  6. Step 6: Final answer
    x = 85,296.94

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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.