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Finding the Fourth Proportional to 335,778.81, 503,722.94 and 99,145.41

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Solution

The fourth proportional to 335,778.81, 503,722.94 and 99,145.41 is: 148,734.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,778.81 : 503,722.94 = 99,145.41 : x
  2. Step 2: Convert to fraction form
    335,778.81/503,722.94 = 99,145.41/x
  3. Step 3: Cross multiply
    335,778.81x = 503,722.94 × 99,145.41
  4. Step 4: Simplify right side
    335,778.81x = 49,941,816,916.98
  5. Step 5: Solve for x
    x = 49,941,816,916.98/335,778.81
  6. Step 6: Final answer
    x = 148,734.27

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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.