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Finding the Fourth Proportional to 84,017.43, 115,938.72 and 46,291.68

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Solution

The fourth proportional to 84,017.43, 115,938.72 and 46,291.68 is: 63,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,017.43 : 115,938.72 = 46,291.68 : x
  2. Step 2: Convert to fraction form
    84,017.43/115,938.72 = 46,291.68/x
  3. Step 3: Cross multiply
    84,017.43x = 115,938.72 × 46,291.68
  4. Step 4: Simplify right side
    84,017.43x = 5,366,998,125.85
  5. Step 5: Solve for x
    x = 5,366,998,125.85/84,017.43
  6. Step 6: Final answer
    x = 63,879.58

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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.