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Finding the Fourth Proportional to 34,705.80, 47,893.95 and 18,790.25

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Solution

The fourth proportional to 34,705.80, 47,893.95 and 18,790.25 is: 25,930.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,705.80 : 47,893.95 = 18,790.25 : x
  2. Step 2: Convert to fraction form
    34,705.80/47,893.95 = 18,790.25/x
  3. Step 3: Cross multiply
    34,705.80x = 47,893.95 × 18,790.25
  4. Step 4: Simplify right side
    34,705.80x = 899,939,054.52
  5. Step 5: Solve for x
    x = 899,939,054.52/34,705.80
  6. Step 6: Final answer
    x = 25,930.51

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1.5x scale

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.