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Finding the Fourth Proportional to 13,359.81, 20,041.43 and 4,926.88

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Solution

The fourth proportional to 13,359.81, 20,041.43 and 4,926.88 is: 7,390.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.81 : 20,041.43 = 4,926.88 : x
  2. Step 2: Convert to fraction form
    13,359.81/20,041.43 = 4,926.88/x
  3. Step 3: Cross multiply
    13,359.81x = 20,041.43 × 4,926.88
  4. Step 4: Simplify right side
    13,359.81x = 98,741,608.32
  5. Step 5: Solve for x
    x = 98,741,608.32/13,359.81
  6. Step 6: Final answer
    x = 7,390.94

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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.