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Finding the Fourth Proportional to 18,762.81, 25,908.57 and 12,063.30

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Solution

The fourth proportional to 18,762.81, 25,908.57 and 12,063.30 is: 16,657.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.81 : 25,908.57 = 12,063.30 : x
  2. Step 2: Convert to fraction form
    18,762.81/25,908.57 = 12,063.30/x
  3. Step 3: Cross multiply
    18,762.81x = 25,908.57 × 12,063.30
  4. Step 4: Simplify right side
    18,762.81x = 312,542,852.48
  5. Step 5: Solve for x
    x = 312,542,852.48/18,762.81
  6. Step 6: Final answer
    x = 16,657.57

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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.