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Finding the Fourth Proportional to 78,226.56, 107,970.52 and 45,964.97

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Solution

The fourth proportional to 78,226.56, 107,970.52 and 45,964.97 is: 63,442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,226.56 : 107,970.52 = 45,964.97 : x
  2. Step 2: Convert to fraction form
    78,226.56/107,970.52 = 45,964.97/x
  3. Step 3: Cross multiply
    78,226.56x = 107,970.52 × 45,964.97
  4. Step 4: Simplify right side
    78,226.56x = 4,962,861,548.99
  5. Step 5: Solve for x
    x = 4,962,861,548.99/78,226.56
  6. Step 6: Final answer
    x = 63,442.16

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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.