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Finding the Fourth Proportional to 449,152.78, 619,840.21 and 245,212.30

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Solution

The fourth proportional to 449,152.78, 619,840.21 and 245,212.30 is: 338,398.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,152.78 : 619,840.21 = 245,212.30 : x
  2. Step 2: Convert to fraction form
    449,152.78/619,840.21 = 245,212.30/x
  3. Step 3: Cross multiply
    449,152.78x = 619,840.21 × 245,212.30
  4. Step 4: Simplify right side
    449,152.78x = 151,992,443,526.58
  5. Step 5: Solve for x
    x = 151,992,443,526.58/449,152.78
  6. Step 6: Final answer
    x = 338,398.09

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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.