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Finding the Fourth Proportional to 16,718.70, 25,069.14 and 5,621.70

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Solution

The fourth proportional to 16,718.70, 25,069.14 and 5,621.70 is: 8,429.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,718.70 : 25,069.14 = 5,621.70 : x
  2. Step 2: Convert to fraction form
    16,718.70/25,069.14 = 5,621.70/x
  3. Step 3: Cross multiply
    16,718.70x = 25,069.14 × 5,621.70
  4. Step 4: Simplify right side
    16,718.70x = 140,931,184.34
  5. Step 5: Solve for x
    x = 140,931,184.34/16,718.70
  6. Step 6: Final answer
    x = 8,429.55

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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.