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Finding the Fourth Proportional to 438,067.76, 657,101.64 and 171,953.60

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Solution

The fourth proportional to 438,067.76, 657,101.64 and 171,953.60 is: 257,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,067.76 : 657,101.64 = 171,953.60 : x
  2. Step 2: Convert to fraction form
    438,067.76/657,101.64 = 171,953.60/x
  3. Step 3: Cross multiply
    438,067.76x = 657,101.64 × 171,953.60
  4. Step 4: Simplify right side
    438,067.76x = 112,990,992,563.90
  5. Step 5: Solve for x
    x = 112,990,992,563.90/438,067.76
  6. Step 6: Final answer
    x = 257,930.40

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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.