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Finding the Fourth Proportional to 16,957.76, 25,440.28 and 5,271.89

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Solution

The fourth proportional to 16,957.76, 25,440.28 and 5,271.89 is: 7,908.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,957.76 : 25,440.28 = 5,271.89 : x
  2. Step 2: Convert to fraction form
    16,957.76/25,440.28 = 5,271.89/x
  3. Step 3: Cross multiply
    16,957.76x = 25,440.28 × 5,271.89
  4. Step 4: Simplify right side
    16,957.76x = 134,118,217.35
  5. Step 5: Solve for x
    x = 134,118,217.35/16,957.76
  6. Step 6: Final answer
    x = 7,908.96

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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.