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Finding the Fourth Proportional to 16,984.80, 25,477.20 and 14,479.20

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Solution

The fourth proportional to 16,984.80, 25,477.20 and 14,479.20 is: 21,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,984.80 : 25,477.20 = 14,479.20 : x
  2. Step 2: Convert to fraction form
    16,984.80/25,477.20 = 14,479.20/x
  3. Step 3: Cross multiply
    16,984.80x = 25,477.20 × 14,479.20
  4. Step 4: Simplify right side
    16,984.80x = 368,889,474.24
  5. Step 5: Solve for x
    x = 368,889,474.24/16,984.80
  6. Step 6: Final answer
    x = 21,718.80

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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.