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Finding the Fourth Proportional to 263,866.68, 395,855.52 and 86,359.92

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Solution

The fourth proportional to 263,866.68, 395,855.52 and 86,359.92 is: 129,558.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,866.68 : 395,855.52 = 86,359.92 : x
  2. Step 2: Convert to fraction form
    263,866.68/395,855.52 = 86,359.92/x
  3. Step 3: Cross multiply
    263,866.68x = 395,855.52 × 86,359.92
  4. Step 4: Simplify right side
    263,866.68x = 34,186,051,038.76
  5. Step 5: Solve for x
    x = 34,186,051,038.76/263,866.68
  6. Step 6: Final answer
    x = 129,558.04

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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.