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Finding the Fourth Proportional to 18,783.94, 25,922.65 and 10,400.44

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Solution

The fourth proportional to 18,783.94, 25,922.65 and 10,400.44 is: 14,353.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.94 : 25,922.65 = 10,400.44 : x
  2. Step 2: Convert to fraction form
    18,783.94/25,922.65 = 10,400.44/x
  3. Step 3: Cross multiply
    18,783.94x = 25,922.65 × 10,400.44
  4. Step 4: Simplify right side
    18,783.94x = 269,606,875.16
  5. Step 5: Solve for x
    x = 269,606,875.16/18,783.94
  6. Step 6: Final answer
    x = 14,353.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.