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Finding the Fourth Proportional to 80,984.63, 111,758.88 and 45,176.93

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Solution

The fourth proportional to 80,984.63, 111,758.88 and 45,176.93 is: 62,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,984.63 : 111,758.88 = 45,176.93 : x
  2. Step 2: Convert to fraction form
    80,984.63/111,758.88 = 45,176.93/x
  3. Step 3: Cross multiply
    80,984.63x = 111,758.88 × 45,176.93
  4. Step 4: Simplify right side
    80,984.63x = 5,048,922,539.84
  5. Step 5: Solve for x
    x = 5,048,922,539.84/80,984.63
  6. Step 6: Final answer
    x = 62,344.21

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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.