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Finding the Third Proportional to 47,220 and 66,019.50

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Solution

The third proportional to 47,220 and 66,019.50 is: 92,303.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,220 : 66,019.50 = 66,019.50 : x
  2. Step 2: Convert to fraction form
    47,220/66,019.50 = 66,019.50/x
  3. Step 3: Cross multiply
    47,220x = 66,019.50 × 66,019.50
  4. Step 4: Simplify right side
    47,220x = 4,358,574,380.25
  5. Step 5: Solve for x
    x = 4,358,574,380.25/47,220
  6. Step 6: Final answer
    x = 92,303.57

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.