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Finding the Fourth Proportional to 18,389.84, 27,598.62 and 13,472.11

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Solution

The fourth proportional to 18,389.84, 27,598.62 and 13,472.11 is: 20,218.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,389.84 : 27,598.62 = 13,472.11 : x
  2. Step 2: Convert to fraction form
    18,389.84/27,598.62 = 13,472.11/x
  3. Step 3: Cross multiply
    18,389.84x = 27,598.62 × 13,472.11
  4. Step 4: Simplify right side
    18,389.84x = 371,811,506.50
  5. Step 5: Solve for x
    x = 371,811,506.50/18,389.84
  6. Step 6: Final answer
    x = 20,218.31

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1.5x scale

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.