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Finding the Fourth Proportional to 13,281.17, 19,924.48 and 4,959.17

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Solution

The fourth proportional to 13,281.17, 19,924.48 and 4,959.17 is: 7,439.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.17 : 19,924.48 = 4,959.17 : x
  2. Step 2: Convert to fraction form
    13,281.17/19,924.48 = 4,959.17/x
  3. Step 3: Cross multiply
    13,281.17x = 19,924.48 × 4,959.17
  4. Step 4: Simplify right side
    13,281.17x = 98,808,976.85
  5. Step 5: Solve for x
    x = 98,808,976.85/13,281.17
  6. Step 6: Final answer
    x = 7,439.78

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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.