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Finding the Fourth Proportional to 85,596.81, 118,083.75 and 55,391.87

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Solution

The fourth proportional to 85,596.81, 118,083.75 and 55,391.87 is: 76,414.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,596.81 : 118,083.75 = 55,391.87 : x
  2. Step 2: Convert to fraction form
    85,596.81/118,083.75 = 55,391.87/x
  3. Step 3: Cross multiply
    85,596.81x = 118,083.75 × 55,391.87
  4. Step 4: Simplify right side
    85,596.81x = 6,540,879,729.11
  5. Step 5: Solve for x
    x = 6,540,879,729.11/85,596.81
  6. Step 6: Final answer
    x = 76,414.99

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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.