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Finding the Fourth Proportional to 619,402.92, 928,320.50 and 353,313.06

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Solution

The fourth proportional to 619,402.92, 928,320.50 and 353,313.06 is: 529,522.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,402.92 : 928,320.50 = 353,313.06 : x
  2. Step 2: Convert to fraction form
    619,402.92/928,320.50 = 353,313.06/x
  3. Step 3: Cross multiply
    619,402.92x = 928,320.50 × 353,313.06
  4. Step 4: Simplify right side
    619,402.92x = 327,987,756,515.73
  5. Step 5: Solve for x
    x = 327,987,756,515.73/619,402.92
  6. Step 6: Final answer
    x = 529,522.46

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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.