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Finding the Fourth Proportional to 14,039.84, 19,384.08 and 8,736.80

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Solution

The fourth proportional to 14,039.84, 19,384.08 and 8,736.80 is: 12,062.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,039.84 : 19,384.08 = 8,736.80 : x
  2. Step 2: Convert to fraction form
    14,039.84/19,384.08 = 8,736.80/x
  3. Step 3: Cross multiply
    14,039.84x = 19,384.08 × 8,736.80
  4. Step 4: Simplify right side
    14,039.84x = 169,354,830.14
  5. Step 5: Solve for x
    x = 169,354,830.14/14,039.84
  6. Step 6: Final answer
    x = 12,062.45

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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.