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Finding the Fourth Proportional to 52,728.30, 79,080.03 and 15,278.49

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Solution

The fourth proportional to 52,728.30, 79,080.03 and 15,278.49 is: 22,914.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,728.30 : 79,080.03 = 15,278.49 : x
  2. Step 2: Convert to fraction form
    52,728.30/79,080.03 = 15,278.49/x
  3. Step 3: Cross multiply
    52,728.30x = 79,080.03 × 15,278.49
  4. Step 4: Simplify right side
    52,728.30x = 1,208,223,447.55
  5. Step 5: Solve for x
    x = 1,208,223,447.55/52,728.30
  6. Step 6: Final answer
    x = 22,914.14

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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.