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Finding the Fourth Proportional to 39,135.66, 58,702.44 and 11,057.66

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Solution

The fourth proportional to 39,135.66, 58,702.44 and 11,057.66 is: 16,586.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,135.66 : 58,702.44 = 11,057.66 : x
  2. Step 2: Convert to fraction form
    39,135.66/58,702.44 = 11,057.66/x
  3. Step 3: Cross multiply
    39,135.66x = 58,702.44 × 11,057.66
  4. Step 4: Simplify right side
    39,135.66x = 649,111,622.69
  5. Step 5: Solve for x
    x = 649,111,622.69/39,135.66
  6. Step 6: Final answer
    x = 16,586.19

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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.