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Finding the Fourth Proportional to 85,790.54, 118,395.64 and 47,554.61

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Solution

The fourth proportional to 85,790.54, 118,395.64 and 47,554.61 is: 65,627.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,790.54 : 118,395.64 = 47,554.61 : x
  2. Step 2: Convert to fraction form
    85,790.54/118,395.64 = 47,554.61/x
  3. Step 3: Cross multiply
    85,790.54x = 118,395.64 × 47,554.61
  4. Step 4: Simplify right side
    85,790.54x = 5,630,257,919.24
  5. Step 5: Solve for x
    x = 5,630,257,919.24/85,790.54
  6. Step 6: Final answer
    x = 65,627.96

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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.