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Finding the Fourth Proportional to 19,022.80, 28,534.20 and 16,430.80

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Solution

The fourth proportional to 19,022.80, 28,534.20 and 16,430.80 is: 24,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,022.80 : 28,534.20 = 16,430.80 : x
  2. Step 2: Convert to fraction form
    19,022.80/28,534.20 = 16,430.80/x
  3. Step 3: Cross multiply
    19,022.80x = 28,534.20 × 16,430.80
  4. Step 4: Simplify right side
    19,022.80x = 468,839,733.36
  5. Step 5: Solve for x
    x = 468,839,733.36/19,022.80
  6. Step 6: Final answer
    x = 24,646.20

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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.