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Finding the Fourth Proportional to 18,356.60, 25,336.16 and 12,069.56

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Solution

The fourth proportional to 18,356.60, 25,336.16 and 12,069.56 is: 16,658.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.60 : 25,336.16 = 12,069.56 : x
  2. Step 2: Convert to fraction form
    18,356.60/25,336.16 = 12,069.56/x
  3. Step 3: Cross multiply
    18,356.60x = 25,336.16 × 12,069.56
  4. Step 4: Simplify right side
    18,356.60x = 305,796,303.29
  5. Step 5: Solve for x
    x = 305,796,303.29/18,356.60
  6. Step 6: Final answer
    x = 16,658.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.