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Finding the Fourth Proportional to 8,696.55, 13,026.60 and 7,773.15

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Solution

The fourth proportional to 8,696.55, 13,026.60 and 7,773.15 is: 11,643.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.55 : 13,026.60 = 7,773.15 : x
  2. Step 2: Convert to fraction form
    8,696.55/13,026.60 = 7,773.15/x
  3. Step 3: Cross multiply
    8,696.55x = 13,026.60 × 7,773.15
  4. Step 4: Simplify right side
    8,696.55x = 101,257,715.79
  5. Step 5: Solve for x
    x = 101,257,715.79/8,696.55
  6. Step 6: Final answer
    x = 11,643.44

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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.