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Finding the Fourth Proportional to 13,801.68, 20,702.60 and 5,036.56

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Solution

The fourth proportional to 13,801.68, 20,702.60 and 5,036.56 is: 7,554.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.68 : 20,702.60 = 5,036.56 : x
  2. Step 2: Convert to fraction form
    13,801.68/20,702.60 = 5,036.56/x
  3. Step 3: Cross multiply
    13,801.68x = 20,702.60 × 5,036.56
  4. Step 4: Simplify right side
    13,801.68x = 104,269,887.06
  5. Step 5: Solve for x
    x = 104,269,887.06/13,801.68
  6. Step 6: Final answer
    x = 7,554.87

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1.5x scale

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.