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Finding the Fourth Proportional to 619,879.64, 928,932.44 and 353,089.40

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Solution

The fourth proportional to 619,879.64, 928,932.44 and 353,089.40 is: 529,128.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,879.64 : 928,932.44 = 353,089.40 : x
  2. Step 2: Convert to fraction form
    619,879.64/928,932.44 = 353,089.40/x
  3. Step 3: Cross multiply
    619,879.64x = 928,932.44 × 353,089.40
  4. Step 4: Simplify right side
    619,879.64x = 327,996,191,470.03
  5. Step 5: Solve for x
    x = 327,996,191,470.03/619,879.64
  6. Step 6: Final answer
    x = 529,128.84

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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.