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Finding the Fourth Proportional to 58,455.60, 87,682.48 and 54,719.88

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Solution

The fourth proportional to 58,455.60, 87,682.48 and 54,719.88 is: 82,078.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,455.60 : 87,682.48 = 54,719.88 : x
  2. Step 2: Convert to fraction form
    58,455.60/87,682.48 = 54,719.88/x
  3. Step 3: Cross multiply
    58,455.60x = 87,682.48 × 54,719.88
  4. Step 4: Simplify right side
    58,455.60x = 4,797,974,783.70
  5. Step 5: Solve for x
    x = 4,797,974,783.70/58,455.60
  6. Step 6: Final answer
    x = 82,078.96

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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.