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Finding the Fourth Proportional to 14,473.76, 21,697.84 and 6,261.28

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Solution

The fourth proportional to 14,473.76, 21,697.84 and 6,261.28 is: 9,386.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,473.76 : 21,697.84 = 6,261.28 : x
  2. Step 2: Convert to fraction form
    14,473.76/21,697.84 = 6,261.28/x
  3. Step 3: Cross multiply
    14,473.76x = 21,697.84 × 6,261.28
  4. Step 4: Simplify right side
    14,473.76x = 135,856,251.64
  5. Step 5: Solve for x
    x = 135,856,251.64/14,473.76
  6. Step 6: Final answer
    x = 9,386.38

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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.