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Finding the Fourth Proportional to 84,562.59, 126,846.96 and 28,404.54

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Solution

The fourth proportional to 84,562.59, 126,846.96 and 28,404.54 is: 42,607.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,562.59 : 126,846.96 = 28,404.54 : x
  2. Step 2: Convert to fraction form
    84,562.59/126,846.96 = 28,404.54/x
  3. Step 3: Cross multiply
    84,562.59x = 126,846.96 × 28,404.54
  4. Step 4: Simplify right side
    84,562.59x = 3,603,029,549.20
  5. Step 5: Solve for x
    x = 3,603,029,549.20/84,562.59
  6. Step 6: Final answer
    x = 42,607.84

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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.