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Finding the Fourth Proportional to 520,860.88, 781,369.32 and 188,514.64

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Solution

The fourth proportional to 520,860.88, 781,369.32 and 188,514.64 is: 282,800.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,860.88 : 781,369.32 = 188,514.64 : x
  2. Step 2: Convert to fraction form
    520,860.88/781,369.32 = 188,514.64/x
  3. Step 3: Cross multiply
    520,860.88x = 781,369.32 × 188,514.64
  4. Step 4: Simplify right side
    520,860.88x = 147,299,551,217.43
  5. Step 5: Solve for x
    x = 147,299,551,217.43/520,860.88
  6. Step 6: Final answer
    x = 282,800.18

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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.