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Finding the Fourth Proportional to 13,888.45, 20,834.73 and 4,026.45

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Solution

The fourth proportional to 13,888.45, 20,834.73 and 4,026.45 is: 6,040.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.45 : 20,834.73 = 4,026.45 : x
  2. Step 2: Convert to fraction form
    13,888.45/20,834.73 = 4,026.45/x
  3. Step 3: Cross multiply
    13,888.45x = 20,834.73 × 4,026.45
  4. Step 4: Simplify right side
    13,888.45x = 83,889,983.51
  5. Step 5: Solve for x
    x = 83,889,983.51/13,888.45
  6. Step 6: Final answer
    x = 6,040.27

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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.