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Finding the Fourth Proportional to 408,555.20, 612,908.10 and 183,921.12

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Solution

The fourth proportional to 408,555.20, 612,908.10 and 183,921.12 is: 275,915.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,555.20 : 612,908.10 = 183,921.12 : x
  2. Step 2: Convert to fraction form
    408,555.20/612,908.10 = 183,921.12/x
  3. Step 3: Cross multiply
    408,555.20x = 612,908.10 × 183,921.12
  4. Step 4: Simplify right side
    408,555.20x = 112,726,744,209.07
  5. Step 5: Solve for x
    x = 112,726,744,209.07/408,555.20
  6. Step 6: Final answer
    x = 275,915.58

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1.5x scale

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.