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Finding the Fourth Proportional to 19,630.89, 27,075.08 and 13,878.17

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Solution

The fourth proportional to 19,630.89, 27,075.08 and 13,878.17 is: 19,140.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,630.89 : 27,075.08 = 13,878.17 : x
  2. Step 2: Convert to fraction form
    19,630.89/27,075.08 = 13,878.17/x
  3. Step 3: Cross multiply
    19,630.89x = 27,075.08 × 13,878.17
  4. Step 4: Simplify right side
    19,630.89x = 375,752,358.24
  5. Step 5: Solve for x
    x = 375,752,358.24/19,630.89
  6. Step 6: Final answer
    x = 19,140.87

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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.