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Finding the Fourth Proportional to 892,485, 1,231,505.36 and 524,978.78

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Solution

The fourth proportional to 892,485, 1,231,505.36 and 524,978.78 is: 724,397.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,485 : 1,231,505.36 = 524,978.78 : x
  2. Step 2: Convert to fraction form
    892,485/1,231,505.36 = 524,978.78/x
  3. Step 3: Cross multiply
    892,485x = 1,231,505.36 × 524,978.78
  4. Step 4: Simplify right side
    892,485x = 646,514,181,456.26
  5. Step 5: Solve for x
    x = 646,514,181,456.26/892,485
  6. Step 6: Final answer
    x = 724,397.81

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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.