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Finding the Fourth Proportional to 30,798.54, 46,200.72 and 8,611.91

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Solution

The fourth proportional to 30,798.54, 46,200.72 and 8,611.91 is: 12,918.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,798.54 : 46,200.72 = 8,611.91 : x
  2. Step 2: Convert to fraction form
    30,798.54/46,200.72 = 8,611.91/x
  3. Step 3: Cross multiply
    30,798.54x = 46,200.72 × 8,611.91
  4. Step 4: Simplify right side
    30,798.54x = 397,876,630.09
  5. Step 5: Solve for x
    x = 397,876,630.09/30,798.54
  6. Step 6: Final answer
    x = 12,918.69

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1.5x scale

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.