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Finding the Fourth Proportional to 323,666.85, 485,558.61 and 99,023.07

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Solution

The fourth proportional to 323,666.85, 485,558.61 and 99,023.07 is: 148,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,666.85 : 485,558.61 = 99,023.07 : x
  2. Step 2: Convert to fraction form
    323,666.85/485,558.61 = 99,023.07/x
  3. Step 3: Cross multiply
    323,666.85x = 485,558.61 × 99,023.07
  4. Step 4: Simplify right side
    323,666.85x = 48,081,504,227.13
  5. Step 5: Solve for x
    x = 48,081,504,227.13/323,666.85
  6. Step 6: Final answer
    x = 148,552.45

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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.