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Finding the Fourth Proportional to 323,985.91, 486,049.95 and 99,363.24

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Solution

The fourth proportional to 323,985.91, 486,049.95 and 99,363.24 is: 149,066.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,985.91 : 486,049.95 = 99,363.24 : x
  2. Step 2: Convert to fraction form
    323,985.91/486,049.95 = 99,363.24/x
  3. Step 3: Cross multiply
    323,985.91x = 486,049.95 × 99,363.24
  4. Step 4: Simplify right side
    323,985.91x = 48,295,497,833.84
  5. Step 5: Solve for x
    x = 48,295,497,833.84/323,985.91
  6. Step 6: Final answer
    x = 149,066.66

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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.