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Finding the Fourth Proportional to 173,790.80, 260,772.60 and 68,613.20

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Solution

The fourth proportional to 173,790.80, 260,772.60 and 68,613.20 is: 102,953.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,790.80 : 260,772.60 = 68,613.20 : x
  2. Step 2: Convert to fraction form
    173,790.80/260,772.60 = 68,613.20/x
  3. Step 3: Cross multiply
    173,790.80x = 260,772.60 × 68,613.20
  4. Step 4: Simplify right side
    173,790.80x = 17,892,442,558.32
  5. Step 5: Solve for x
    x = 17,892,442,558.32/173,790.80
  6. Step 6: Final answer
    x = 102,953.91

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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.