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Finding the Fourth Proportional to 18,637.50, 27,919.34 and 12,068.30

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Solution

The fourth proportional to 18,637.50, 27,919.34 and 12,068.30 is: 18,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.50 : 27,919.34 = 12,068.30 : x
  2. Step 2: Convert to fraction form
    18,637.50/27,919.34 = 12,068.30/x
  3. Step 3: Cross multiply
    18,637.50x = 27,919.34 × 12,068.30
  4. Step 4: Simplify right side
    18,637.50x = 336,938,970.92
  5. Step 5: Solve for x
    x = 336,938,970.92/18,637.50
  6. Step 6: Final answer
    x = 18,078.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.