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Finding the Fourth Proportional to 21,671.73, 29,890.40 and 14,968.58

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Solution

The fourth proportional to 21,671.73, 29,890.40 and 14,968.58 is: 20,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.73 : 29,890.40 = 14,968.58 : x
  2. Step 2: Convert to fraction form
    21,671.73/29,890.40 = 14,968.58/x
  3. Step 3: Cross multiply
    21,671.73x = 29,890.40 × 14,968.58
  4. Step 4: Simplify right side
    21,671.73x = 447,416,619.34
  5. Step 5: Solve for x
    x = 447,416,619.34/21,671.73
  6. Step 6: Final answer
    x = 20,645.17

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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.