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Finding the Fourth Proportional to 443,322.40, 664,789.20 and 176,994.40

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Solution

The fourth proportional to 443,322.40, 664,789.20 and 176,994.40 is: 265,413.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,322.40 : 664,789.20 = 176,994.40 : x
  2. Step 2: Convert to fraction form
    443,322.40/664,789.20 = 176,994.40/x
  3. Step 3: Cross multiply
    443,322.40x = 664,789.20 × 176,994.40
  4. Step 4: Simplify right side
    443,322.40x = 117,663,965,580.48
  5. Step 5: Solve for x
    x = 117,663,965,580.48/443,322.40
  6. Step 6: Final answer
    x = 265,413.99

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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.