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Finding the Fourth Proportional to 49,656.70, 74,485.05 and 40,908.70

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Solution

The fourth proportional to 49,656.70, 74,485.05 and 40,908.70 is: 61,363.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,656.70 : 74,485.05 = 40,908.70 : x
  2. Step 2: Convert to fraction form
    49,656.70/74,485.05 = 40,908.70/x
  3. Step 3: Cross multiply
    49,656.70x = 74,485.05 × 40,908.70
  4. Step 4: Simplify right side
    49,656.70x = 3,047,086,564.94
  5. Step 5: Solve for x
    x = 3,047,086,564.94/49,656.70
  6. Step 6: Final answer
    x = 61,363.05

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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.