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Finding the Fourth Proportional to 77,928.33, 116,863.34 and 61,482.09

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Solution

The fourth proportional to 77,928.33, 116,863.34 and 61,482.09 is: 92,200.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,928.33 : 116,863.34 = 61,482.09 : x
  2. Step 2: Convert to fraction form
    77,928.33/116,863.34 = 61,482.09/x
  3. Step 3: Cross multiply
    77,928.33x = 116,863.34 × 61,482.09
  4. Step 4: Simplify right side
    77,928.33x = 7,185,002,080.17
  5. Step 5: Solve for x
    x = 7,185,002,080.17/77,928.33
  6. Step 6: Final answer
    x = 92,200.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.