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Finding the Fourth Proportional to 78,453.92, 108,263.76 and 44,913.44

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Solution

The fourth proportional to 78,453.92, 108,263.76 and 44,913.44 is: 61,979.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,453.92 : 108,263.76 = 44,913.44 : x
  2. Step 2: Convert to fraction form
    78,453.92/108,263.76 = 44,913.44/x
  3. Step 3: Cross multiply
    78,453.92x = 108,263.76 × 44,913.44
  4. Step 4: Simplify right side
    78,453.92x = 4,862,497,888.93
  5. Step 5: Solve for x
    x = 4,862,497,888.93/78,453.92
  6. Step 6: Final answer
    x = 61,979.03

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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.