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Finding the Fourth Proportional to 18,702.94, 25,808.18 and 11,045.02

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Solution

The fourth proportional to 18,702.94, 25,808.18 and 11,045.02 is: 15,241.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.94 : 25,808.18 = 11,045.02 : x
  2. Step 2: Convert to fraction form
    18,702.94/25,808.18 = 11,045.02/x
  3. Step 3: Cross multiply
    18,702.94x = 25,808.18 × 11,045.02
  4. Step 4: Simplify right side
    18,702.94x = 285,051,864.26
  5. Step 5: Solve for x
    x = 285,051,864.26/18,702.94
  6. Step 6: Final answer
    x = 15,241.02

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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.