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Finding the Fourth Proportional to 38,991.60, 58,509.76 and 38,674.52

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Solution

The fourth proportional to 38,991.60, 58,509.76 and 38,674.52 is: 58,033.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,991.60 : 58,509.76 = 38,674.52 : x
  2. Step 2: Convert to fraction form
    38,991.60/58,509.76 = 38,674.52/x
  3. Step 3: Cross multiply
    38,991.60x = 58,509.76 × 38,674.52
  4. Step 4: Simplify right side
    38,991.60x = 2,262,836,883.32
  5. Step 5: Solve for x
    x = 2,262,836,883.32/38,991.60
  6. Step 6: Final answer
    x = 58,033.96

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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.