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Finding the Fourth Proportional to 13,798.95, 20,698.21 and 3,410.70

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Solution

The fourth proportional to 13,798.95, 20,698.21 and 3,410.70 is: 5,116.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,798.95 : 20,698.21 = 3,410.70 : x
  2. Step 2: Convert to fraction form
    13,798.95/20,698.21 = 3,410.70/x
  3. Step 3: Cross multiply
    13,798.95x = 20,698.21 × 3,410.70
  4. Step 4: Simplify right side
    13,798.95x = 70,595,384.85
  5. Step 5: Solve for x
    x = 70,595,384.85/13,798.95
  6. Step 6: Final answer
    x = 5,116.00

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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.