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Finding the Fourth Proportional to 209,885.45, 289,348.47 and 177,489.92

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Solution

The fourth proportional to 209,885.45, 289,348.47 and 177,489.92 is: 244,687.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,885.45 : 289,348.47 = 177,489.92 : x
  2. Step 2: Convert to fraction form
    209,885.45/289,348.47 = 177,489.92/x
  3. Step 3: Cross multiply
    209,885.45x = 289,348.47 × 177,489.92
  4. Step 4: Simplify right side
    209,885.45x = 51,356,437,515.79
  5. Step 5: Solve for x
    x = 51,356,437,515.79/209,885.45
  6. Step 6: Final answer
    x = 244,687.94

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1.5x scale

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.