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Finding the Fourth Proportional to 399,407.92, 598,815.96 and 188,799.76

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Solution

The fourth proportional to 399,407.92, 598,815.96 and 188,799.76 is: 283,059.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,407.92 : 598,815.96 = 188,799.76 : x
  2. Step 2: Convert to fraction form
    399,407.92/598,815.96 = 188,799.76/x
  3. Step 3: Cross multiply
    399,407.92x = 598,815.96 × 188,799.76
  4. Step 4: Simplify right side
    399,407.92x = 113,056,309,532.17
  5. Step 5: Solve for x
    x = 113,056,309,532.17/399,407.92
  6. Step 6: Final answer
    x = 283,059.76

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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.