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Finding the Fourth Proportional to 85,651.64, 118,202.48 and 47,926.16

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Solution

The fourth proportional to 85,651.64, 118,202.48 and 47,926.16 is: 66,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,651.64 : 118,202.48 = 47,926.16 : x
  2. Step 2: Convert to fraction form
    85,651.64/118,202.48 = 47,926.16/x
  3. Step 3: Cross multiply
    85,651.64x = 118,202.48 × 47,926.16
  4. Step 4: Simplify right side
    85,651.64x = 5,664,990,968.88
  5. Step 5: Solve for x
    x = 5,664,990,968.88/85,651.64
  6. Step 6: Final answer
    x = 66,139.90

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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.