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Finding the Third Proportional to 4,117.50 and 4,419

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Solution

The third proportional to 4,117.50 and 4,419 is: 4,742.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,117.50 : 4,419 = 4,419 : x
  2. Step 2: Convert to fraction form
    4,117.50/4,419 = 4,419/x
  3. Step 3: Cross multiply
    4,117.50x = 4,419 × 4,419
  4. Step 4: Simplify right side
    4,117.50x = 19,527,561
  5. Step 5: Solve for x
    x = 19,527,561/4,117.50
  6. Step 6: Final answer
    x = 4,742.58

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.