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Finding the Fourth Proportional to 445,813.05, 615,221.94 and 254,830.54

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Solution

The fourth proportional to 445,813.05, 615,221.94 and 254,830.54 is: 351,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,813.05 : 615,221.94 = 254,830.54 : x
  2. Step 2: Convert to fraction form
    445,813.05/615,221.94 = 254,830.54/x
  3. Step 3: Cross multiply
    445,813.05x = 615,221.94 × 254,830.54
  4. Step 4: Simplify right side
    445,813.05x = 156,777,339,190.05
  5. Step 5: Solve for x
    x = 156,777,339,190.05/445,813.05
  6. Step 6: Final answer
    x = 351,666.11

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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.