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Finding the Fourth Proportional to 619,908.98, 928,975.60 and 353,118.66

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Solution

The fourth proportional to 619,908.98, 928,975.60 and 353,118.66 is: 529,172.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,908.98 : 928,975.60 = 353,118.66 : x
  2. Step 2: Convert to fraction form
    619,908.98/928,975.60 = 353,118.66/x
  3. Step 3: Cross multiply
    619,908.98x = 928,975.60 × 353,118.66
  4. Step 4: Simplify right side
    619,908.98x = 328,038,619,044.70
  5. Step 5: Solve for x
    x = 328,038,619,044.70/619,908.98
  6. Step 6: Final answer
    x = 529,172.23

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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.