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Finding the Fourth Proportional to 38,623.80, 57,978.90 and 36,085.80

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Solution

The fourth proportional to 38,623.80, 57,978.90 and 36,085.80 is: 54,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,623.80 : 57,978.90 = 36,085.80 : x
  2. Step 2: Convert to fraction form
    38,623.80/57,978.90 = 36,085.80/x
  3. Step 3: Cross multiply
    38,623.80x = 57,978.90 × 36,085.80
  4. Step 4: Simplify right side
    38,623.80x = 2,092,214,989.62
  5. Step 5: Solve for x
    x = 2,092,214,989.62/38,623.80
  6. Step 6: Final answer
    x = 54,169.06

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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.