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Finding the Fourth Proportional to 60,745.60, 91,215.60 and 41,111.20

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Solution

The fourth proportional to 60,745.60, 91,215.60 and 41,111.20 is: 61,732.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,745.60 : 91,215.60 = 41,111.20 : x
  2. Step 2: Convert to fraction form
    60,745.60/91,215.60 = 41,111.20/x
  3. Step 3: Cross multiply
    60,745.60x = 91,215.60 × 41,111.20
  4. Step 4: Simplify right side
    60,745.60x = 3,749,982,774.72
  5. Step 5: Solve for x
    x = 3,749,982,774.72/60,745.60
  6. Step 6: Final answer
    x = 61,732.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.