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Finding the Fourth Proportional to 84,883.70, 117,133.75 and 46,645.90

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Solution

The fourth proportional to 84,883.70, 117,133.75 and 46,645.90 is: 64,368.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,883.70 : 117,133.75 = 46,645.90 : x
  2. Step 2: Convert to fraction form
    84,883.70/117,133.75 = 46,645.90/x
  3. Step 3: Cross multiply
    84,883.70x = 117,133.75 × 46,645.90
  4. Step 4: Simplify right side
    84,883.70x = 5,463,809,021.65
  5. Step 5: Solve for x
    x = 5,463,809,021.65/84,883.70
  6. Step 6: Final answer
    x = 64,368.18

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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.