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Finding the Fourth Proportional to 4,750.62, 7,124.10 and 2,118.93

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Solution

The fourth proportional to 4,750.62, 7,124.10 and 2,118.93 is: 3,177.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,750.62 : 7,124.10 = 2,118.93 : x
  2. Step 2: Convert to fraction form
    4,750.62/7,124.10 = 2,118.93/x
  3. Step 3: Cross multiply
    4,750.62x = 7,124.10 × 2,118.93
  4. Step 4: Simplify right side
    4,750.62x = 15,095,469.21
  5. Step 5: Solve for x
    x = 15,095,469.21/4,750.62
  6. Step 6: Final answer
    x = 3,177.58

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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.