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Finding the Fourth Proportional to 567,276.69, 782,841.81 and 312,627.88

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Solution

The fourth proportional to 567,276.69, 782,841.81 and 312,627.88 is: 431,426.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,276.69 : 782,841.81 = 312,627.88 : x
  2. Step 2: Convert to fraction form
    567,276.69/782,841.81 = 312,627.88/x
  3. Step 3: Cross multiply
    567,276.69x = 782,841.81 × 312,627.88
  4. Step 4: Simplify right side
    567,276.69x = 244,738,175,435.66
  5. Step 5: Solve for x
    x = 244,738,175,435.66/567,276.69
  6. Step 6: Final answer
    x = 431,426.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.