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Finding the Fourth Proportional to 625,810.05, 863,634.84 and 353,918.60

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Solution

The fourth proportional to 625,810.05, 863,634.84 and 353,918.60 is: 488,417.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,810.05 : 863,634.84 = 353,918.60 : x
  2. Step 2: Convert to fraction form
    625,810.05/863,634.84 = 353,918.60/x
  3. Step 3: Cross multiply
    625,810.05x = 863,634.84 × 353,918.60
  4. Step 4: Simplify right side
    625,810.05x = 305,656,433,484.02
  5. Step 5: Solve for x
    x = 305,656,433,484.02/625,810.05
  6. Step 6: Final answer
    x = 488,417.27

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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.