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Finding the Fourth Proportional to 625,453.64, 863,218.64 and 396,032.23

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Solution

The fourth proportional to 625,453.64, 863,218.64 and 396,032.23 is: 546,583.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,453.64 : 863,218.64 = 396,032.23 : x
  2. Step 2: Convert to fraction form
    625,453.64/863,218.64 = 396,032.23/x
  3. Step 3: Cross multiply
    625,453.64x = 863,218.64 × 396,032.23
  4. Step 4: Simplify right side
    625,453.64x = 341,862,401,808.80
  5. Step 5: Solve for x
    x = 341,862,401,808.80/625,453.64
  6. Step 6: Final answer
    x = 546,583.12

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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.