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Finding the Fourth Proportional to 16,767.84, 25,155.66 and 4,921.80

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Solution

The fourth proportional to 16,767.84, 25,155.66 and 4,921.80 is: 7,383.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,767.84 : 25,155.66 = 4,921.80 : x
  2. Step 2: Convert to fraction form
    16,767.84/25,155.66 = 4,921.80/x
  3. Step 3: Cross multiply
    16,767.84x = 25,155.66 × 4,921.80
  4. Step 4: Simplify right side
    16,767.84x = 123,811,051.51
  5. Step 5: Solve for x
    x = 123,811,051.51/16,767.84
  6. Step 6: Final answer
    x = 7,383.84

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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.