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Finding the Fourth Proportional to 21,994.57, 30,323.95 and 14,022.96

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Solution

The fourth proportional to 21,994.57, 30,323.95 and 14,022.96 is: 19,333.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.57 : 30,323.95 = 14,022.96 : x
  2. Step 2: Convert to fraction form
    21,994.57/30,323.95 = 14,022.96/x
  3. Step 3: Cross multiply
    21,994.57x = 30,323.95 × 14,022.96
  4. Step 4: Simplify right side
    21,994.57x = 425,231,537.89
  5. Step 5: Solve for x
    x = 425,231,537.89/21,994.57
  6. Step 6: Final answer
    x = 19,333.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.