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Finding the Fourth Proportional to 54,405.68, 81,542.88 and 28,096.04

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Solution

The fourth proportional to 54,405.68, 81,542.88 and 28,096.04 is: 42,110.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,405.68 : 81,542.88 = 28,096.04 : x
  2. Step 2: Convert to fraction form
    54,405.68/81,542.88 = 28,096.04/x
  3. Step 3: Cross multiply
    54,405.68x = 81,542.88 × 28,096.04
  4. Step 4: Simplify right side
    54,405.68x = 2,291,032,018.20
  5. Step 5: Solve for x
    x = 2,291,032,018.20/54,405.68
  6. Step 6: Final answer
    x = 42,110.16

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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.