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Finding the Fourth Proportional to 66,212.35, 91,362.46 and 43,560.51

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Solution

The fourth proportional to 66,212.35, 91,362.46 and 43,560.51 is: 60,106.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,212.35 : 91,362.46 = 43,560.51 : x
  2. Step 2: Convert to fraction form
    66,212.35/91,362.46 = 43,560.51/x
  3. Step 3: Cross multiply
    66,212.35x = 91,362.46 × 43,560.51
  4. Step 4: Simplify right side
    66,212.35x = 3,979,795,352.45
  5. Step 5: Solve for x
    x = 3,979,795,352.45/66,212.35
  6. Step 6: Final answer
    x = 60,106.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.