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Finding the Fourth Proportional to 18,115.94, 27,167.42 and 9,802.10

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Solution

The fourth proportional to 18,115.94, 27,167.42 and 9,802.10 is: 14,699.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.94 : 27,167.42 = 9,802.10 : x
  2. Step 2: Convert to fraction form
    18,115.94/27,167.42 = 9,802.10/x
  3. Step 3: Cross multiply
    18,115.94x = 27,167.42 × 9,802.10
  4. Step 4: Simplify right side
    18,115.94x = 266,297,767.58
  5. Step 5: Solve for x
    x = 266,297,767.58/18,115.94
  6. Step 6: Final answer
    x = 14,699.64

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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.