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Finding the Fourth Proportional to 78,664.80, 108,550.80 and 44,666.40

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Solution

The fourth proportional to 78,664.80, 108,550.80 and 44,666.40 is: 61,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,664.80 : 108,550.80 = 44,666.40 : x
  2. Step 2: Convert to fraction form
    78,664.80/108,550.80 = 44,666.40/x
  3. Step 3: Cross multiply
    78,664.80x = 108,550.80 × 44,666.40
  4. Step 4: Simplify right side
    78,664.80x = 4,848,573,453.12
  5. Step 5: Solve for x
    x = 4,848,573,453.12/78,664.80
  6. Step 6: Final answer
    x = 61,635.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.