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Finding the Fourth Proportional to 18,564.40, 27,846.66 and 4,713.40

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Solution

The fourth proportional to 18,564.40, 27,846.66 and 4,713.40 is: 7,070.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,564.40 : 27,846.66 = 4,713.40 : x
  2. Step 2: Convert to fraction form
    18,564.40/27,846.66 = 4,713.40/x
  3. Step 3: Cross multiply
    18,564.40x = 27,846.66 × 4,713.40
  4. Step 4: Simplify right side
    18,564.40x = 131,252,447.24
  5. Step 5: Solve for x
    x = 131,252,447.24/18,564.40
  6. Step 6: Final answer
    x = 7,070.12

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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.