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Finding the Fourth Proportional to 18,403.81, 27,602.98 and 6,717.03

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Solution

The fourth proportional to 18,403.81, 27,602.98 and 6,717.03 is: 10,074.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.81 : 27,602.98 = 6,717.03 : x
  2. Step 2: Convert to fraction form
    18,403.81/27,602.98 = 6,717.03/x
  3. Step 3: Cross multiply
    18,403.81x = 27,602.98 × 6,717.03
  4. Step 4: Simplify right side
    18,403.81x = 185,409,924.45
  5. Step 5: Solve for x
    x = 185,409,924.45/18,403.81
  6. Step 6: Final answer
    x = 10,074.54

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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.