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Finding the Fourth Proportional to 78,887.40, 108,865.21 and 44,898.48

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Solution

The fourth proportional to 78,887.40, 108,865.21 and 44,898.48 is: 61,960.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,887.40 : 108,865.21 = 44,898.48 : x
  2. Step 2: Convert to fraction form
    78,887.40/108,865.21 = 44,898.48/x
  3. Step 3: Cross multiply
    78,887.40x = 108,865.21 × 44,898.48
  4. Step 4: Simplify right side
    78,887.40x = 4,887,882,453.88
  5. Step 5: Solve for x
    x = 4,887,882,453.88/78,887.40
  6. Step 6: Final answer
    x = 61,960.24

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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.