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Finding the Fourth Proportional to 84,063.80, 116,016.21 and 62,806.16

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Solution

The fourth proportional to 84,063.80, 116,016.21 and 62,806.16 is: 86,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,063.80 : 116,016.21 = 62,806.16 : x
  2. Step 2: Convert to fraction form
    84,063.80/116,016.21 = 62,806.16/x
  3. Step 3: Cross multiply
    84,063.80x = 116,016.21 × 62,806.16
  4. Step 4: Simplify right side
    84,063.80x = 7,286,532,067.77
  5. Step 5: Solve for x
    x = 7,286,532,067.77/84,063.80
  6. Step 6: Final answer
    x = 86,678.60

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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.