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Finding the Fourth Proportional to 18,472.91, 27,688.84 and 14,075.87

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Solution

The fourth proportional to 18,472.91, 27,688.84 and 14,075.87 is: 21,098.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.91 : 27,688.84 = 14,075.87 : x
  2. Step 2: Convert to fraction form
    18,472.91/27,688.84 = 14,075.87/x
  3. Step 3: Cross multiply
    18,472.91x = 27,688.84 × 14,075.87
  4. Step 4: Simplify right side
    18,472.91x = 389,744,338.66
  5. Step 5: Solve for x
    x = 389,744,338.66/18,472.91
  6. Step 6: Final answer
    x = 21,098.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.