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Finding the Fourth Proportional to 13,591.49, 18,756.23 and 7,926.48

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Solution

The fourth proportional to 13,591.49, 18,756.23 and 7,926.48 is: 10,938.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.49 : 18,756.23 = 7,926.48 : x
  2. Step 2: Convert to fraction form
    13,591.49/18,756.23 = 7,926.48/x
  3. Step 3: Cross multiply
    13,591.49x = 18,756.23 × 7,926.48
  4. Step 4: Simplify right side
    13,591.49x = 148,670,842.34
  5. Step 5: Solve for x
    x = 148,670,842.34/13,591.49
  6. Step 6: Final answer
    x = 10,938.53

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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.