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Finding the Fourth Proportional to 58,441.80, 87,662.70 and 28,864.20

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Solution

The fourth proportional to 58,441.80, 87,662.70 and 28,864.20 is: 43,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,441.80 : 87,662.70 = 28,864.20 : x
  2. Step 2: Convert to fraction form
    58,441.80/87,662.70 = 28,864.20/x
  3. Step 3: Cross multiply
    58,441.80x = 87,662.70 × 28,864.20
  4. Step 4: Simplify right side
    58,441.80x = 2,530,313,705.34
  5. Step 5: Solve for x
    x = 2,530,313,705.34/58,441.80
  6. Step 6: Final answer
    x = 43,296.30

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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.