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Finding the Fourth Proportional to 328,540.20, 453,385.50 and 177,637.20

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Solution

The fourth proportional to 328,540.20, 453,385.50 and 177,637.20 is: 245,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,540.20 : 453,385.50 = 177,637.20 : x
  2. Step 2: Convert to fraction form
    328,540.20/453,385.50 = 177,637.20/x
  3. Step 3: Cross multiply
    328,540.20x = 453,385.50 × 177,637.20
  4. Step 4: Simplify right side
    328,540.20x = 80,538,130,740.60
  5. Step 5: Solve for x
    x = 80,538,130,740.60/328,540.20
  6. Step 6: Final answer
    x = 245,139.35

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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.