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Finding the Fourth Proportional to 18,697.43, 28,045.78 and 4,846.07

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Solution

The fourth proportional to 18,697.43, 28,045.78 and 4,846.07 is: 7,269.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.43 : 28,045.78 = 4,846.07 : x
  2. Step 2: Convert to fraction form
    18,697.43/28,045.78 = 4,846.07/x
  3. Step 3: Cross multiply
    18,697.43x = 28,045.78 × 4,846.07
  4. Step 4: Simplify right side
    18,697.43x = 135,911,813.08
  5. Step 5: Solve for x
    x = 135,911,813.08/18,697.43
  6. Step 6: Final answer
    x = 7,269.01

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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.