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Finding the Fourth Proportional to 78,903.81, 108,887.95 and 44,914.49

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Solution

The fourth proportional to 78,903.81, 108,887.95 and 44,914.49 is: 61,982.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,903.81 : 108,887.95 = 44,914.49 : x
  2. Step 2: Convert to fraction form
    78,903.81/108,887.95 = 44,914.49/x
  3. Step 3: Cross multiply
    78,903.81x = 108,887.95 × 44,914.49
  4. Step 4: Simplify right side
    78,903.81x = 4,890,646,741.40
  5. Step 5: Solve for x
    x = 4,890,646,741.40/78,903.81
  6. Step 6: Final answer
    x = 61,982.39

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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.