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Finding the Fourth Proportional to 279,124.22, 385,180.44 and 151,799.78

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Solution

The fourth proportional to 279,124.22, 385,180.44 and 151,799.78 is: 209,477.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,124.22 : 385,180.44 = 151,799.78 : x
  2. Step 2: Convert to fraction form
    279,124.22/385,180.44 = 151,799.78/x
  3. Step 3: Cross multiply
    279,124.22x = 385,180.44 × 151,799.78
  4. Step 4: Simplify right side
    279,124.22x = 58,470,306,052.30
  5. Step 5: Solve for x
    x = 58,470,306,052.30/279,124.22
  6. Step 6: Final answer
    x = 209,477.72

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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.