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Finding the Fourth Proportional to 441,329.11, 661,993.66 and 125,777.81

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Solution

The fourth proportional to 441,329.11, 661,993.66 and 125,777.81 is: 188,666.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,329.11 : 661,993.66 = 125,777.81 : x
  2. Step 2: Convert to fraction form
    441,329.11/661,993.66 = 125,777.81/x
  3. Step 3: Cross multiply
    441,329.11x = 661,993.66 × 125,777.81
  4. Step 4: Simplify right side
    441,329.11x = 83,264,114,600.89
  5. Step 5: Solve for x
    x = 83,264,114,600.89/441,329.11
  6. Step 6: Final answer
    x = 188,666.72

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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.