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Finding the Fourth Proportional to 13,913.73, 20,870.63 and 4,053.25

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Solution

The fourth proportional to 13,913.73, 20,870.63 and 4,053.25 is: 6,079.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.73 : 20,870.63 = 4,053.25 : x
  2. Step 2: Convert to fraction form
    13,913.73/20,870.63 = 4,053.25/x
  3. Step 3: Cross multiply
    13,913.73x = 20,870.63 × 4,053.25
  4. Step 4: Simplify right side
    13,913.73x = 84,593,756.43
  5. Step 5: Solve for x
    x = 84,593,756.43/13,913.73
  6. Step 6: Final answer
    x = 6,079.88

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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.