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Finding the Fourth Proportional to 70,359.20, 105,692.40 and 49,623.20

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Solution

The fourth proportional to 70,359.20, 105,692.40 and 49,623.20 is: 74,543.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,359.20 : 105,692.40 = 49,623.20 : x
  2. Step 2: Convert to fraction form
    70,359.20/105,692.40 = 49,623.20/x
  3. Step 3: Cross multiply
    70,359.20x = 105,692.40 × 49,623.20
  4. Step 4: Simplify right side
    70,359.20x = 5,244,795,103.68
  5. Step 5: Solve for x
    x = 5,244,795,103.68/70,359.20
  6. Step 6: Final answer
    x = 74,543.13

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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.