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Finding the Fourth Proportional to 328,890.70, 453,870.57 and 177,987.70

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Solution

The fourth proportional to 328,890.70, 453,870.57 and 177,987.70 is: 245,623.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,890.70 : 453,870.57 = 177,987.70 : x
  2. Step 2: Convert to fraction form
    328,890.70/453,870.57 = 177,987.70/x
  3. Step 3: Cross multiply
    328,890.70x = 453,870.57 × 177,987.70
  4. Step 4: Simplify right side
    328,890.70x = 80,783,378,851.99
  5. Step 5: Solve for x
    x = 80,783,378,851.99/328,890.70
  6. Step 6: Final answer
    x = 245,623.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.