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Finding the Fourth Proportional to 38,993.44, 58,479.76 and 10,911.74

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Solution

The fourth proportional to 38,993.44, 58,479.76 and 10,911.74 is: 16,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,993.44 : 58,479.76 = 10,911.74 : x
  2. Step 2: Convert to fraction form
    38,993.44/58,479.76 = 10,911.74/x
  3. Step 3: Cross multiply
    38,993.44x = 58,479.76 × 10,911.74
  4. Step 4: Simplify right side
    38,993.44x = 638,115,936.38
  5. Step 5: Solve for x
    x = 638,115,936.38/38,993.44
  6. Step 6: Final answer
    x = 16,364.70

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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.