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Finding the Fourth Proportional to 19,241.76, 28,861.96 and 7,392.48

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Solution

The fourth proportional to 19,241.76, 28,861.96 and 7,392.48 is: 11,088.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,241.76 : 28,861.96 = 7,392.48 : x
  2. Step 2: Convert to fraction form
    19,241.76/28,861.96 = 7,392.48/x
  3. Step 3: Cross multiply
    19,241.76x = 28,861.96 × 7,392.48
  4. Step 4: Simplify right side
    19,241.76x = 213,361,462.06
  5. Step 5: Solve for x
    x = 213,361,462.06/19,241.76
  6. Step 6: Final answer
    x = 11,088.46

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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.