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Finding the Fourth Proportional to 49,666.80, 74,435.40 and 20,060.40

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Solution

The fourth proportional to 49,666.80, 74,435.40 and 20,060.40 is: 30,064.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,666.80 : 74,435.40 = 20,060.40 : x
  2. Step 2: Convert to fraction form
    49,666.80/74,435.40 = 20,060.40/x
  3. Step 3: Cross multiply
    49,666.80x = 74,435.40 × 20,060.40
  4. Step 4: Simplify right side
    49,666.80x = 1,493,203,898.16
  5. Step 5: Solve for x
    x = 1,493,203,898.16/49,666.80
  6. Step 6: Final answer
    x = 30,064.43

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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.