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Finding the Fourth Proportional to 18,497.80, 27,711.51 and 10,985.44

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Solution

The fourth proportional to 18,497.80, 27,711.51 and 10,985.44 is: 16,457.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,497.80 : 27,711.51 = 10,985.44 : x
  2. Step 2: Convert to fraction form
    18,497.80/27,711.51 = 10,985.44/x
  3. Step 3: Cross multiply
    18,497.80x = 27,711.51 × 10,985.44
  4. Step 4: Simplify right side
    18,497.80x = 304,423,130.41
  5. Step 5: Solve for x
    x = 304,423,130.41/18,497.80
  6. Step 6: Final answer
    x = 16,457.26

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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.