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Finding the Fourth Proportional to 38,744.80, 58,117.20 and 11,039.20

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Solution

The fourth proportional to 38,744.80, 58,117.20 and 11,039.20 is: 16,558.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,744.80 : 58,117.20 = 11,039.20 : x
  2. Step 2: Convert to fraction form
    38,744.80/58,117.20 = 11,039.20/x
  3. Step 3: Cross multiply
    38,744.80x = 58,117.20 × 11,039.20
  4. Step 4: Simplify right side
    38,744.80x = 641,567,394.24
  5. Step 5: Solve for x
    x = 641,567,394.24/38,744.80
  6. Step 6: Final answer
    x = 16,558.80

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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.