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Finding the Fourth Proportional to 18,602.65, 25,670.95 and 11,528.92

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Solution

The fourth proportional to 18,602.65, 25,670.95 and 11,528.92 is: 15,909.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.65 : 25,670.95 = 11,528.92 : x
  2. Step 2: Convert to fraction form
    18,602.65/25,670.95 = 11,528.92/x
  3. Step 3: Cross multiply
    18,602.65x = 25,670.95 × 11,528.92
  4. Step 4: Simplify right side
    18,602.65x = 295,958,328.87
  5. Step 5: Solve for x
    x = 295,958,328.87/18,602.65
  6. Step 6: Final answer
    x = 15,909.47

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