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Finding the Fourth Proportional to 14,591.55, 21,894.15 and 7,191.97

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Solution

The fourth proportional to 14,591.55, 21,894.15 and 7,191.97 is: 10,791.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,591.55 : 21,894.15 = 7,191.97 : x
  2. Step 2: Convert to fraction form
    14,591.55/21,894.15 = 7,191.97/x
  3. Step 3: Cross multiply
    14,591.55x = 21,894.15 × 7,191.97
  4. Step 4: Simplify right side
    14,591.55x = 157,461,960.50
  5. Step 5: Solve for x
    x = 157,461,960.50/14,591.55
  6. Step 6: Final answer
    x = 10,791.32

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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.