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Finding the Fourth Proportional to 19,969.48, 29,956.88 and 6,818.32

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Solution

The fourth proportional to 19,969.48, 29,956.88 and 6,818.32 is: 10,228.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,969.48 : 29,956.88 = 6,818.32 : x
  2. Step 2: Convert to fraction form
    19,969.48/29,956.88 = 6,818.32/x
  3. Step 3: Cross multiply
    19,969.48x = 29,956.88 × 6,818.32
  4. Step 4: Simplify right side
    19,969.48x = 204,255,594.04
  5. Step 5: Solve for x
    x = 204,255,594.04/19,969.48
  6. Step 6: Final answer
    x = 10,228.39

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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.