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Finding the Fourth Proportional to 125,878.72, 188,850.88 and 46,993.60

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Solution

The fourth proportional to 125,878.72, 188,850.88 and 46,993.60 is: 70,502.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,878.72 : 188,850.88 = 46,993.60 : x
  2. Step 2: Convert to fraction form
    125,878.72/188,850.88 = 46,993.60/x
  3. Step 3: Cross multiply
    125,878.72x = 188,850.88 × 46,993.60
  4. Step 4: Simplify right side
    125,878.72x = 8,874,782,714.37
  5. Step 5: Solve for x
    x = 8,874,782,714.37/125,878.72
  6. Step 6: Final answer
    x = 70,502.65

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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.