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Finding the Fourth Proportional to 38,978.87, 58,491.36 and 16,488.27

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Solution

The fourth proportional to 38,978.87, 58,491.36 and 16,488.27 is: 24,742.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,978.87 : 58,491.36 = 16,488.27 : x
  2. Step 2: Convert to fraction form
    38,978.87/58,491.36 = 16,488.27/x
  3. Step 3: Cross multiply
    38,978.87x = 58,491.36 × 16,488.27
  4. Step 4: Simplify right side
    38,978.87x = 964,421,336.35
  5. Step 5: Solve for x
    x = 964,421,336.35/38,978.87
  6. Step 6: Final answer
    x = 24,742.16

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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.