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Finding the Fourth Proportional to 62,640.86, 86,442.57 and 35,782.83

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Solution

The fourth proportional to 62,640.86, 86,442.57 and 35,782.83 is: 49,379.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,640.86 : 86,442.57 = 35,782.83 : x
  2. Step 2: Convert to fraction form
    62,640.86/86,442.57 = 35,782.83/x
  3. Step 3: Cross multiply
    62,640.86x = 86,442.57 × 35,782.83
  4. Step 4: Simplify right side
    62,640.86x = 3,093,159,787.07
  5. Step 5: Solve for x
    x = 3,093,159,787.07/62,640.86
  6. Step 6: Final answer
    x = 49,379.27

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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.