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Finding the Fourth Proportional to 19,356.16, 28,914.11 and 14,049.04

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Solution

The fourth proportional to 19,356.16, 28,914.11 and 14,049.04 is: 20,986.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,356.16 : 28,914.11 = 14,049.04 : x
  2. Step 2: Convert to fraction form
    19,356.16/28,914.11 = 14,049.04/x
  3. Step 3: Cross multiply
    19,356.16x = 28,914.11 × 14,049.04
  4. Step 4: Simplify right side
    19,356.16x = 406,215,487.95
  5. Step 5: Solve for x
    x = 406,215,487.95/19,356.16
  6. Step 6: Final answer
    x = 20,986.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.