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Finding the Fourth Proportional to 78,358.40, 108,133.44 and 44,817.92

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Solution

The fourth proportional to 78,358.40, 108,133.44 and 44,817.92 is: 61,848.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,358.40 : 108,133.44 = 44,817.92 : x
  2. Step 2: Convert to fraction form
    78,358.40/108,133.44 = 44,817.92/x
  3. Step 3: Cross multiply
    78,358.40x = 108,133.44 × 44,817.92
  4. Step 4: Simplify right side
    78,358.40x = 4,846,315,863.24
  5. Step 5: Solve for x
    x = 4,846,315,863.24/78,358.40
  6. Step 6: Final answer
    x = 61,848.07

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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.