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Finding the Fourth Proportional to 73,905.80, 110,928.30 and 38,870.60

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Solution

The fourth proportional to 73,905.80, 110,928.30 and 38,870.60 is: 58,342.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,905.80 : 110,928.30 = 38,870.60 : x
  2. Step 2: Convert to fraction form
    73,905.80/110,928.30 = 38,870.60/x
  3. Step 3: Cross multiply
    73,905.80x = 110,928.30 × 38,870.60
  4. Step 4: Simplify right side
    73,905.80x = 4,311,849,577.98
  5. Step 5: Solve for x
    x = 4,311,849,577.98/73,905.80
  6. Step 6: Final answer
    x = 58,342.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.