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Finding the Fourth Proportional to 13,305.60, 19,959.02 and 4,540.60

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Solution

The fourth proportional to 13,305.60, 19,959.02 and 4,540.60 is: 6,811.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.60 : 19,959.02 = 4,540.60 : x
  2. Step 2: Convert to fraction form
    13,305.60/19,959.02 = 4,540.60/x
  3. Step 3: Cross multiply
    13,305.60x = 19,959.02 × 4,540.60
  4. Step 4: Simplify right side
    13,305.60x = 90,625,926.21
  5. Step 5: Solve for x
    x = 90,625,926.21/13,305.60
  6. Step 6: Final answer
    x = 6,811.11

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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.