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Finding the Fourth Proportional to 13,752.24, 18,978.44 and 7,464.60

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Solution

The fourth proportional to 13,752.24, 18,978.44 and 7,464.60 is: 10,301.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.24 : 18,978.44 = 7,464.60 : x
  2. Step 2: Convert to fraction form
    13,752.24/18,978.44 = 7,464.60/x
  3. Step 3: Cross multiply
    13,752.24x = 18,978.44 × 7,464.60
  4. Step 4: Simplify right side
    13,752.24x = 141,666,425.90
  5. Step 5: Solve for x
    x = 141,666,425.90/13,752.24
  6. Step 6: Final answer
    x = 10,301.33

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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.