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Finding the Fourth Proportional to 14,106, 19,466.28 and 7,818.78

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Solution

The fourth proportional to 14,106, 19,466.28 and 7,818.78 is: 10,789.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,106 : 19,466.28 = 7,818.78 : x
  2. Step 2: Convert to fraction form
    14,106/19,466.28 = 7,818.78/x
  3. Step 3: Cross multiply
    14,106x = 19,466.28 × 7,818.78
  4. Step 4: Simplify right side
    14,106x = 152,202,560.74
  5. Step 5: Solve for x
    x = 152,202,560.74/14,106
  6. Step 6: Final answer
    x = 10,789.92

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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.