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Finding the Fourth Proportional to 11,658.42, 17,485.95 and 3,866.22

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Solution

The fourth proportional to 11,658.42, 17,485.95 and 3,866.22 is: 5,798.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,658.42 : 17,485.95 = 3,866.22 : x
  2. Step 2: Convert to fraction form
    11,658.42/17,485.95 = 3,866.22/x
  3. Step 3: Cross multiply
    11,658.42x = 17,485.95 × 3,866.22
  4. Step 4: Simplify right side
    11,658.42x = 67,604,529.61
  5. Step 5: Solve for x
    x = 67,604,529.61/11,658.42
  6. Step 6: Final answer
    x = 5,798.77

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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.