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Finding the Fourth Proportional to 105,668.84, 158,503.44 and 79,042.52

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Solution

The fourth proportional to 105,668.84, 158,503.44 and 79,042.52 is: 118,563.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,668.84 : 158,503.44 = 79,042.52 : x
  2. Step 2: Convert to fraction form
    105,668.84/158,503.44 = 79,042.52/x
  3. Step 3: Cross multiply
    105,668.84x = 158,503.44 × 79,042.52
  4. Step 4: Simplify right side
    105,668.84x = 12,528,511,326.27
  5. Step 5: Solve for x
    x = 12,528,511,326.27/105,668.84
  6. Step 6: Final answer
    x = 118,563.91

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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.