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Finding the Fourth Proportional to 218,881.80, 328,322.70 and 218,881.80

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Solution

The fourth proportional to 218,881.80, 328,322.70 and 218,881.80 is: 328,322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,881.80 : 328,322.70 = 218,881.80 : x
  2. Step 2: Convert to fraction form
    218,881.80/328,322.70 = 218,881.80/x
  3. Step 3: Cross multiply
    218,881.80x = 328,322.70 × 218,881.80
  4. Step 4: Simplify right side
    218,881.80x = 71,863,863,556.86
  5. Step 5: Solve for x
    x = 71,863,863,556.86/218,881.80
  6. Step 6: Final answer
    x = 328,322.70

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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.