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Finding the Fourth Proportional to 119,757.80, 165,262.74 and 68,779.64

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Solution

The fourth proportional to 119,757.80, 165,262.74 and 68,779.64 is: 94,914.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,757.80 : 165,262.74 = 68,779.64 : x
  2. Step 2: Convert to fraction form
    119,757.80/165,262.74 = 68,779.64/x
  3. Step 3: Cross multiply
    119,757.80x = 165,262.74 × 68,779.64
  4. Step 4: Simplify right side
    119,757.80x = 11,366,711,762.61
  5. Step 5: Solve for x
    x = 11,366,711,762.61/119,757.80
  6. Step 6: Final answer
    x = 94,914.17

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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.