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Finding the Fourth Proportional to 13,607.66, 18,773.73 and 8,894.67

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Solution

The fourth proportional to 13,607.66, 18,773.73 and 8,894.67 is: 12,271.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.66 : 18,773.73 = 8,894.67 : x
  2. Step 2: Convert to fraction form
    13,607.66/18,773.73 = 8,894.67/x
  3. Step 3: Cross multiply
    13,607.66x = 18,773.73 × 8,894.67
  4. Step 4: Simplify right side
    13,607.66x = 166,986,133.02
  5. Step 5: Solve for x
    x = 166,986,133.02/13,607.66
  6. Step 6: Final answer
    x = 12,271.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.