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Finding the Fourth Proportional to 13,806.45, 19,053.54 and 8,141.45

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Solution

The fourth proportional to 13,806.45, 19,053.54 and 8,141.45 is: 11,235.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,806.45 : 19,053.54 = 8,141.45 : x
  2. Step 2: Convert to fraction form
    13,806.45/19,053.54 = 8,141.45/x
  3. Step 3: Cross multiply
    13,806.45x = 19,053.54 × 8,141.45
  4. Step 4: Simplify right side
    13,806.45x = 155,123,347.97
  5. Step 5: Solve for x
    x = 155,123,347.97/13,806.45
  6. Step 6: Final answer
    x = 11,235.57

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1.5x scale

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.