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Finding the Fourth Proportional to 84,036, 115,969.68 and 46,310.25

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Solution

The fourth proportional to 84,036, 115,969.68 and 46,310.25 is: 63,908.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,036 : 115,969.68 = 46,310.25 : x
  2. Step 2: Convert to fraction form
    84,036/115,969.68 = 46,310.25/x
  3. Step 3: Cross multiply
    84,036x = 115,969.68 × 46,310.25
  4. Step 4: Simplify right side
    84,036x = 5,370,584,873.22
  5. Step 5: Solve for x
    x = 5,370,584,873.22/84,036
  6. Step 6: Final answer
    x = 63,908.15

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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.