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Finding the Fourth Proportional to 18,607.84, 27,878.94 and 9,823.36

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Solution

The fourth proportional to 18,607.84, 27,878.94 and 9,823.36 is: 14,717.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.84 : 27,878.94 = 9,823.36 : x
  2. Step 2: Convert to fraction form
    18,607.84/27,878.94 = 9,823.36/x
  3. Step 3: Cross multiply
    18,607.84x = 27,878.94 × 9,823.36
  4. Step 4: Simplify right side
    18,607.84x = 273,864,864.04
  5. Step 5: Solve for x
    x = 273,864,864.04/18,607.84
  6. Step 6: Final answer
    x = 14,717.71

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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.