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Finding the Fourth Proportional to 18,762.62, 25,898.96 and 10,808.02

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Solution

The fourth proportional to 18,762.62, 25,898.96 and 10,808.02 is: 14,918.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.62 : 25,898.96 = 10,808.02 : x
  2. Step 2: Convert to fraction form
    18,762.62/25,898.96 = 10,808.02/x
  3. Step 3: Cross multiply
    18,762.62x = 25,898.96 × 10,808.02
  4. Step 4: Simplify right side
    18,762.62x = 279,916,477.66
  5. Step 5: Solve for x
    x = 279,916,477.66/18,762.62
  6. Step 6: Final answer
    x = 14,918.84

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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.