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Finding the Fourth Proportional to 86,198.79, 118,886.84 and 58,990.98

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Solution

The fourth proportional to 86,198.79, 118,886.84 and 58,990.98 is: 81,361.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,198.79 : 118,886.84 = 58,990.98 : x
  2. Step 2: Convert to fraction form
    86,198.79/118,886.84 = 58,990.98/x
  3. Step 3: Cross multiply
    86,198.79x = 118,886.84 × 58,990.98
  4. Step 4: Simplify right side
    86,198.79x = 7,013,250,905.75
  5. Step 5: Solve for x
    x = 7,013,250,905.75/86,198.79
  6. Step 6: Final answer
    x = 81,361.36

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1.5x scale

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.