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Finding the Fourth Proportional to 13,471.48, 18,591.21 and 7,503.14

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Solution

The fourth proportional to 13,471.48, 18,591.21 and 7,503.14 is: 10,354.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,471.48 : 18,591.21 = 7,503.14 : x
  2. Step 2: Convert to fraction form
    13,471.48/18,591.21 = 7,503.14/x
  3. Step 3: Cross multiply
    13,471.48x = 18,591.21 × 7,503.14
  4. Step 4: Simplify right side
    13,471.48x = 139,492,497.88
  5. Step 5: Solve for x
    x = 139,492,497.88/13,471.48
  6. Step 6: Final answer
    x = 10,354.65

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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.