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Finding the Fourth Proportional to 192,664.60, 288,999.02 and 86,053.98

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Solution

The fourth proportional to 192,664.60, 288,999.02 and 86,053.98 is: 129,081.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,664.60 : 288,999.02 = 86,053.98 : x
  2. Step 2: Convert to fraction form
    192,664.60/288,999.02 = 86,053.98/x
  3. Step 3: Cross multiply
    192,664.60x = 288,999.02 × 86,053.98
  4. Step 4: Simplify right side
    192,664.60x = 24,869,515,887.10
  5. Step 5: Solve for x
    x = 24,869,515,887.10/192,664.60
  6. Step 6: Final answer
    x = 129,081.92

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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.