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Finding the Fourth Proportional to 19,989.95, 27,589.50 and 12,032.91

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Solution

The fourth proportional to 19,989.95, 27,589.50 and 12,032.91 is: 16,607.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.95 : 27,589.50 = 12,032.91 : x
  2. Step 2: Convert to fraction form
    19,989.95/27,589.50 = 12,032.91/x
  3. Step 3: Cross multiply
    19,989.95x = 27,589.50 × 12,032.91
  4. Step 4: Simplify right side
    19,989.95x = 331,981,970.45
  5. Step 5: Solve for x
    x = 331,981,970.45/19,989.95
  6. Step 6: Final answer
    x = 16,607.45

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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.