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Finding the Fourth Proportional to 322,409.03, 483,612.93 and 85,751.96

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Solution

The fourth proportional to 322,409.03, 483,612.93 and 85,751.96 is: 128,627.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,409.03 : 483,612.93 = 85,751.96 : x
  2. Step 2: Convert to fraction form
    322,409.03/483,612.93 = 85,751.96/x
  3. Step 3: Cross multiply
    322,409.03x = 483,612.93 × 85,751.96
  4. Step 4: Simplify right side
    322,409.03x = 41,470,754,210.78
  5. Step 5: Solve for x
    x = 41,470,754,210.78/322,409.03
  6. Step 6: Final answer
    x = 128,627.77

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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.