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Finding the Fourth Proportional to 62,396.64, 86,147.59 and 55,670.60

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Solution

The fourth proportional to 62,396.64, 86,147.59 and 55,670.60 is: 76,861.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,396.64 : 86,147.59 = 55,670.60 : x
  2. Step 2: Convert to fraction form
    62,396.64/86,147.59 = 55,670.60/x
  3. Step 3: Cross multiply
    62,396.64x = 86,147.59 × 55,670.60
  4. Step 4: Simplify right side
    62,396.64x = 4,795,888,100.05
  5. Step 5: Solve for x
    x = 4,795,888,100.05/62,396.64
  6. Step 6: Final answer
    x = 76,861.32

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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.