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Finding the Fourth Proportional to 13,476.15, 18,596.67 and 7,811.01

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Solution

The fourth proportional to 13,476.15, 18,596.67 and 7,811.01 is: 10,778.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,476.15 : 18,596.67 = 7,811.01 : x
  2. Step 2: Convert to fraction form
    13,476.15/18,596.67 = 7,811.01/x
  3. Step 3: Cross multiply
    13,476.15x = 18,596.67 × 7,811.01
  4. Step 4: Simplify right side
    13,476.15x = 145,258,775.34
  5. Step 5: Solve for x
    x = 145,258,775.34/13,476.15
  6. Step 6: Final answer
    x = 10,778.95

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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.