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Finding the Fourth Proportional to 621,339.96, 932,000.57 and 279,542.01

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Solution

The fourth proportional to 621,339.96, 932,000.57 and 279,542.01 is: 419,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,339.96 : 932,000.57 = 279,542.01 : x
  2. Step 2: Convert to fraction form
    621,339.96/932,000.57 = 279,542.01/x
  3. Step 3: Cross multiply
    621,339.96x = 932,000.57 × 279,542.01
  4. Step 4: Simplify right side
    621,339.96x = 260,533,310,627.26
  5. Step 5: Solve for x
    x = 260,533,310,627.26/621,339.96
  6. Step 6: Final answer
    x = 419,308.80

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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.