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Finding the Fourth Proportional to 84,043.65, 115,980.24 and 46,317.90

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Solution

The fourth proportional to 84,043.65, 115,980.24 and 46,317.90 is: 63,918.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,043.65 : 115,980.24 = 46,317.90 : x
  2. Step 2: Convert to fraction form
    84,043.65/115,980.24 = 46,317.90/x
  3. Step 3: Cross multiply
    84,043.65x = 115,980.24 × 46,317.90
  4. Step 4: Simplify right side
    84,043.65x = 5,371,961,766.91
  5. Step 5: Solve for x
    x = 5,371,961,766.91/84,043.65
  6. Step 6: Final answer
    x = 63,918.71

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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.