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Finding the Fourth Proportional to 12,674.79, 19,014.08 and 5,275.04

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Solution

The fourth proportional to 12,674.79, 19,014.08 and 5,275.04 is: 7,913.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674.79 : 19,014.08 = 5,275.04 : x
  2. Step 2: Convert to fraction form
    12,674.79/19,014.08 = 5,275.04/x
  3. Step 3: Cross multiply
    12,674.79x = 19,014.08 × 5,275.04
  4. Step 4: Simplify right side
    12,674.79x = 100,299,911.12
  5. Step 5: Solve for x
    x = 100,299,911.12/12,674.79
  6. Step 6: Final answer
    x = 7,913.34

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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.