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Finding the Fourth Proportional to 70,751.44, 106,080.18 and 28,028.53

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Solution

The fourth proportional to 70,751.44, 106,080.18 and 28,028.53 is: 42,024.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,751.44 : 106,080.18 = 28,028.53 : x
  2. Step 2: Convert to fraction form
    70,751.44/106,080.18 = 28,028.53/x
  3. Step 3: Cross multiply
    70,751.44x = 106,080.18 × 28,028.53
  4. Step 4: Simplify right side
    70,751.44x = 2,973,271,507.54
  5. Step 5: Solve for x
    x = 2,973,271,507.54/70,751.44
  6. Step 6: Final answer
    x = 42,024.18

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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.