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Finding the Fourth Proportional to 455,818.48, 629,016.26 and 251,866.16

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Solution

The fourth proportional to 455,818.48, 629,016.26 and 251,866.16 is: 347,567.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,818.48 : 629,016.26 = 251,866.16 : x
  2. Step 2: Convert to fraction form
    455,818.48/629,016.26 = 251,866.16/x
  3. Step 3: Cross multiply
    455,818.48x = 629,016.26 × 251,866.16
  4. Step 4: Simplify right side
    455,818.48x = 158,427,909,983.76
  5. Step 5: Solve for x
    x = 158,427,909,983.76/455,818.48
  6. Step 6: Final answer
    x = 347,567.98

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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.