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Finding the Fourth Proportional to 19,101.63, 28,663.96 and 8,157.63

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Solution

The fourth proportional to 19,101.63, 28,663.96 and 8,157.63 is: 12,241.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,101.63 : 28,663.96 = 8,157.63 : x
  2. Step 2: Convert to fraction form
    19,101.63/28,663.96 = 8,157.63/x
  3. Step 3: Cross multiply
    19,101.63x = 28,663.96 × 8,157.63
  4. Step 4: Simplify right side
    19,101.63x = 233,829,816.30
  5. Step 5: Solve for x
    x = 233,829,816.30/19,101.63
  6. Step 6: Final answer
    x = 12,241.36

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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.