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Finding the Fourth Proportional to 663,992.46, 995,561.85 and 436,018.73

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Solution

The fourth proportional to 663,992.46, 995,561.85 and 436,018.73 is: 653,747.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,992.46 : 995,561.85 = 436,018.73 : x
  2. Step 2: Convert to fraction form
    663,992.46/995,561.85 = 436,018.73/x
  3. Step 3: Cross multiply
    663,992.46x = 995,561.85 × 436,018.73
  4. Step 4: Simplify right side
    663,992.46x = 434,083,610,130.71
  5. Step 5: Solve for x
    x = 434,083,610,130.71/663,992.46
  6. Step 6: Final answer
    x = 653,747.80

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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.