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Finding the Fourth Proportional to 68,859.56, 94,990.77 and 45,928.86

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Solution

The fourth proportional to 68,859.56, 94,990.77 and 45,928.86 is: 63,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,859.56 : 94,990.77 = 45,928.86 : x
  2. Step 2: Convert to fraction form
    68,859.56/94,990.77 = 45,928.86/x
  3. Step 3: Cross multiply
    68,859.56x = 94,990.77 × 45,928.86
  4. Step 4: Simplify right side
    68,859.56x = 4,362,817,776.62
  5. Step 5: Solve for x
    x = 4,362,817,776.62/68,859.56
  6. Step 6: Final answer
    x = 63,358.20

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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.