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Finding the Fourth Proportional to 52,479.70, 78,719.55 and 49,636.60

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Solution

The fourth proportional to 52,479.70, 78,719.55 and 49,636.60 is: 74,454.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,479.70 : 78,719.55 = 49,636.60 : x
  2. Step 2: Convert to fraction form
    52,479.70/78,719.55 = 49,636.60/x
  3. Step 3: Cross multiply
    52,479.70x = 78,719.55 × 49,636.60
  4. Step 4: Simplify right side
    52,479.70x = 3,907,370,815.53
  5. Step 5: Solve for x
    x = 3,907,370,815.53/52,479.70
  6. Step 6: Final answer
    x = 74,454.90

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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.