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Finding the Fourth Proportional to 57,992.90, 81,015.10 and 57,992.90

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Solution

The fourth proportional to 57,992.90, 81,015.10 and 57,992.90 is: 81,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,992.90 : 81,015.10 = 57,992.90 : x
  2. Step 2: Convert to fraction form
    57,992.90/81,015.10 = 57,992.90/x
  3. Step 3: Cross multiply
    57,992.90x = 81,015.10 × 57,992.90
  4. Step 4: Simplify right side
    57,992.90x = 4,698,300,592.79
  5. Step 5: Solve for x
    x = 4,698,300,592.79/57,992.90
  6. Step 6: Final answer
    x = 81,015.10

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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.