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Finding the Fourth Proportional to 98,672.76, 136,063.26 and 79,532.41

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Solution

The fourth proportional to 98,672.76, 136,063.26 and 79,532.41 is: 109,669.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,672.76 : 136,063.26 = 79,532.41 : x
  2. Step 2: Convert to fraction form
    98,672.76/136,063.26 = 79,532.41/x
  3. Step 3: Cross multiply
    98,672.76x = 136,063.26 × 79,532.41
  4. Step 4: Simplify right side
    98,672.76x = 10,821,438,980.26
  5. Step 5: Solve for x
    x = 10,821,438,980.26/98,672.76
  6. Step 6: Final answer
    x = 109,669.98

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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.