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Finding the Fourth Proportional to 16,840.70, 25,261.02 and 7,478.52

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Solution

The fourth proportional to 16,840.70, 25,261.02 and 7,478.52 is: 11,217.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,840.70 : 25,261.02 = 7,478.52 : x
  2. Step 2: Convert to fraction form
    16,840.70/25,261.02 = 7,478.52/x
  3. Step 3: Cross multiply
    16,840.70x = 25,261.02 × 7,478.52
  4. Step 4: Simplify right side
    16,840.70x = 188,915,043.29
  5. Step 5: Solve for x
    x = 188,915,043.29/16,840.70
  6. Step 6: Final answer
    x = 11,217.77

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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.