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Finding the Fourth Proportional to 78,910.40, 108,905.72 and 44,927.06

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Solution

The fourth proportional to 78,910.40, 108,905.72 and 44,927.06 is: 62,004.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,910.40 : 108,905.72 = 44,927.06 : x
  2. Step 2: Convert to fraction form
    78,910.40/108,905.72 = 44,927.06/x
  3. Step 3: Cross multiply
    78,910.40x = 108,905.72 × 44,927.06
  4. Step 4: Simplify right side
    78,910.40x = 4,892,813,047.62
  5. Step 5: Solve for x
    x = 4,892,813,047.62/78,910.40
  6. Step 6: Final answer
    x = 62,004.66

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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.