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Finding the Fourth Proportional to 484,921.01, 727,381.46 and 185,431.88

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Solution

The fourth proportional to 484,921.01, 727,381.46 and 185,431.88 is: 278,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,921.01 : 727,381.46 = 185,431.88 : x
  2. Step 2: Convert to fraction form
    484,921.01/727,381.46 = 185,431.88/x
  3. Step 3: Cross multiply
    484,921.01x = 727,381.46 × 185,431.88
  4. Step 4: Simplify right side
    484,921.01x = 134,879,708,431.62
  5. Step 5: Solve for x
    x = 134,879,708,431.62/484,921.01
  6. Step 6: Final answer
    x = 278,147.80

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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.