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Finding the Fourth Proportional to 16,807.95, 25,211.25 and 6,939.81

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Solution

The fourth proportional to 16,807.95, 25,211.25 and 6,939.81 is: 10,409.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,807.95 : 25,211.25 = 6,939.81 : x
  2. Step 2: Convert to fraction form
    16,807.95/25,211.25 = 6,939.81/x
  3. Step 3: Cross multiply
    16,807.95x = 25,211.25 × 6,939.81
  4. Step 4: Simplify right side
    16,807.95x = 174,961,284.86
  5. Step 5: Solve for x
    x = 174,961,284.86/16,807.95
  6. Step 6: Final answer
    x = 10,409.44

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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.