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Finding the Fourth Proportional to 619,216.31, 928,820.82 and 198,490.97

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Solution

The fourth proportional to 619,216.31, 928,820.82 and 198,490.97 is: 297,735.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,216.31 : 928,820.82 = 198,490.97 : x
  2. Step 2: Convert to fraction form
    619,216.31/928,820.82 = 198,490.97/x
  3. Step 3: Cross multiply
    619,216.31x = 928,820.82 × 198,490.97
  4. Step 4: Simplify right side
    619,216.31x = 184,362,545,518.00
  5. Step 5: Solve for x
    x = 184,362,545,518.00/619,216.31
  6. Step 6: Final answer
    x = 297,735.29

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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.