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Finding the Fourth Proportional to 324,560.16, 486,840.42 and 212,334.66

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Solution

The fourth proportional to 324,560.16, 486,840.42 and 212,334.66 is: 318,502.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,560.16 : 486,840.42 = 212,334.66 : x
  2. Step 2: Convert to fraction form
    324,560.16/486,840.42 = 212,334.66/x
  3. Step 3: Cross multiply
    324,560.16x = 486,840.42 × 212,334.66
  4. Step 4: Simplify right side
    324,560.16x = 103,373,095,054.96
  5. Step 5: Solve for x
    x = 103,373,095,054.96/324,560.16
  6. Step 6: Final answer
    x = 318,502.11

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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.