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Finding the Fourth Proportional to 76,700.58, 105,812.73 and 44,855.43

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Solution

The fourth proportional to 76,700.58, 105,812.73 and 44,855.43 is: 61,880.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,700.58 : 105,812.73 = 44,855.43 : x
  2. Step 2: Convert to fraction form
    76,700.58/105,812.73 = 44,855.43/x
  3. Step 3: Cross multiply
    76,700.58x = 105,812.73 × 44,855.43
  4. Step 4: Simplify right side
    76,700.58x = 4,746,275,503.62
  5. Step 5: Solve for x
    x = 4,746,275,503.62/76,700.58
  6. Step 6: Final answer
    x = 61,880.57

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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.