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Finding the Fourth Proportional to 323,066.59, 484,599.77 and 86,403.12

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Solution

The fourth proportional to 323,066.59, 484,599.77 and 86,403.12 is: 129,604.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,066.59 : 484,599.77 = 86,403.12 : x
  2. Step 2: Convert to fraction form
    323,066.59/484,599.77 = 86,403.12/x
  3. Step 3: Cross multiply
    323,066.59x = 484,599.77 × 86,403.12
  4. Step 4: Simplify right side
    323,066.59x = 41,870,932,079.28
  5. Step 5: Solve for x
    x = 41,870,932,079.28/323,066.59
  6. Step 6: Final answer
    x = 129,604.65

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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.