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Finding the Fourth Proportional to 16,913.40, 25,370.10 and 5,816.40

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Solution

The fourth proportional to 16,913.40, 25,370.10 and 5,816.40 is: 8,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,913.40 : 25,370.10 = 5,816.40 : x
  2. Step 2: Convert to fraction form
    16,913.40/25,370.10 = 5,816.40/x
  3. Step 3: Cross multiply
    16,913.40x = 25,370.10 × 5,816.40
  4. Step 4: Simplify right side
    16,913.40x = 147,562,649.64
  5. Step 5: Solve for x
    x = 147,562,649.64/16,913.40
  6. Step 6: Final answer
    x = 8,724.60

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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.