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Finding the Fourth Proportional to 68,052.16, 102,090.48 and 28,048.88

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Solution

The fourth proportional to 68,052.16, 102,090.48 and 28,048.88 is: 42,078.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,052.16 : 102,090.48 = 28,048.88 : x
  2. Step 2: Convert to fraction form
    68,052.16/102,090.48 = 28,048.88/x
  3. Step 3: Cross multiply
    68,052.16x = 102,090.48 × 28,048.88
  4. Step 4: Simplify right side
    68,052.16x = 2,863,523,622.66
  5. Step 5: Solve for x
    x = 2,863,523,622.66/68,052.16
  6. Step 6: Final answer
    x = 42,078.36

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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.