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Finding the Fourth Proportional to 13,589.69, 18,762.99 and 8,492.99

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Solution

The fourth proportional to 13,589.69, 18,762.99 and 8,492.99 is: 11,726.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589.69 : 18,762.99 = 8,492.99 : x
  2. Step 2: Convert to fraction form
    13,589.69/18,762.99 = 8,492.99/x
  3. Step 3: Cross multiply
    13,589.69x = 18,762.99 × 8,492.99
  4. Step 4: Simplify right side
    13,589.69x = 159,353,886.44
  5. Step 5: Solve for x
    x = 159,353,886.44/13,589.69
  6. Step 6: Final answer
    x = 11,726.09

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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.