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Finding the Fourth Proportional to 19,185, 28,777.30 and 7,498.12

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Solution

The fourth proportional to 19,185, 28,777.30 and 7,498.12 is: 11,247.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,185 : 28,777.30 = 7,498.12 : x
  2. Step 2: Convert to fraction form
    19,185/28,777.30 = 7,498.12/x
  3. Step 3: Cross multiply
    19,185x = 28,777.30 × 7,498.12
  4. Step 4: Simplify right side
    19,185x = 215,775,467.30
  5. Step 5: Solve for x
    x = 215,775,467.30/19,185
  6. Step 6: Final answer
    x = 11,247.09

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Double scale
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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.