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Finding the Fourth Proportional to 16,970.88, 23,431.95 and 11,318.96

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Solution

The fourth proportional to 16,970.88, 23,431.95 and 11,318.96 is: 15,628.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,970.88 : 23,431.95 = 11,318.96 : x
  2. Step 2: Convert to fraction form
    16,970.88/23,431.95 = 11,318.96/x
  3. Step 3: Cross multiply
    16,970.88x = 23,431.95 × 11,318.96
  4. Step 4: Simplify right side
    16,970.88x = 265,225,187.61
  5. Step 5: Solve for x
    x = 265,225,187.61/16,970.88
  6. Step 6: Final answer
    x = 15,628.25

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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.