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Finding the Fourth Proportional to 625,934.28, 863,779.12 and 353,992.01

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Solution

The fourth proportional to 625,934.28, 863,779.12 and 353,992.01 is: 488,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,934.28 : 863,779.12 = 353,992.01 : x
  2. Step 2: Convert to fraction form
    625,934.28/863,779.12 = 353,992.01/x
  3. Step 3: Cross multiply
    625,934.28x = 863,779.12 × 353,992.01
  4. Step 4: Simplify right side
    625,934.28x = 305,770,901,680.96
  5. Step 5: Solve for x
    x = 305,770,901,680.96/625,934.28
  6. Step 6: Final answer
    x = 488,503.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.