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Finding the Fourth Proportional to 18,463.68, 25,460.48 and 12,168

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Solution

The fourth proportional to 18,463.68, 25,460.48 and 12,168 is: 16,779.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,463.68 : 25,460.48 = 12,168 : x
  2. Step 2: Convert to fraction form
    18,463.68/25,460.48 = 12,168/x
  3. Step 3: Cross multiply
    18,463.68x = 25,460.48 × 12,168
  4. Step 4: Simplify right side
    18,463.68x = 309,803,120.64
  5. Step 5: Solve for x
    x = 309,803,120.64/18,463.68
  6. Step 6: Final answer
    x = 16,779.06

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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.