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Finding the Fourth Proportional to 18,798.80, 25,941.58 and 11,240.67

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Solution

The fourth proportional to 18,798.80, 25,941.58 and 11,240.67 is: 15,511.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.80 : 25,941.58 = 11,240.67 : x
  2. Step 2: Convert to fraction form
    18,798.80/25,941.58 = 11,240.67/x
  3. Step 3: Cross multiply
    18,798.80x = 25,941.58 × 11,240.67
  4. Step 4: Simplify right side
    18,798.80x = 291,600,872.47
  5. Step 5: Solve for x
    x = 291,600,872.47/18,798.80
  6. Step 6: Final answer
    x = 15,511.67

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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.