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Finding the Fourth Proportional to 638,077.72, 956,213.52 and 353,893.36

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Solution

The fourth proportional to 638,077.72, 956,213.52 and 353,893.36 is: 530,339.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,077.72 : 956,213.52 = 353,893.36 : x
  2. Step 2: Convert to fraction form
    638,077.72/956,213.52 = 353,893.36/x
  3. Step 3: Cross multiply
    638,077.72x = 956,213.52 × 353,893.36
  4. Step 4: Simplify right side
    638,077.72x = 338,397,615,470.23
  5. Step 5: Solve for x
    x = 338,397,615,470.23/638,077.72
  6. Step 6: Final answer
    x = 530,339.18

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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.