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Finding the Fourth Proportional to 18,491.58, 25,518.35 and 10,533.80

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Solution

The fourth proportional to 18,491.58, 25,518.35 and 10,533.80 is: 14,536.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.58 : 25,518.35 = 10,533.80 : x
  2. Step 2: Convert to fraction form
    18,491.58/25,518.35 = 10,533.80/x
  3. Step 3: Cross multiply
    18,491.58x = 25,518.35 × 10,533.80
  4. Step 4: Simplify right side
    18,491.58x = 268,805,195.23
  5. Step 5: Solve for x
    x = 268,805,195.23/18,491.58
  6. Step 6: Final answer
    x = 14,536.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.