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Finding the Fourth Proportional to 328,638.80, 453,518.96 and 177,735.80

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Solution

The fourth proportional to 328,638.80, 453,518.96 and 177,735.80 is: 245,274.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,638.80 : 453,518.96 = 177,735.80 : x
  2. Step 2: Convert to fraction form
    328,638.80/453,518.96 = 177,735.80/x
  3. Step 3: Cross multiply
    328,638.80x = 453,518.96 × 177,735.80
  4. Step 4: Simplify right side
    328,638.80x = 80,606,555,170.77
  5. Step 5: Solve for x
    x = 80,606,555,170.77/328,638.80
  6. Step 6: Final answer
    x = 245,274.01

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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.