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Finding the Fourth Proportional to 703,909.34, 1,055,843.34 and 171,422.64

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Solution

The fourth proportional to 703,909.34, 1,055,843.34 and 171,422.64 is: 257,128.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,909.34 : 1,055,843.34 = 171,422.64 : x
  2. Step 2: Convert to fraction form
    703,909.34/1,055,843.34 = 171,422.64/x
  3. Step 3: Cross multiply
    703,909.34x = 1,055,843.34 × 171,422.64
  4. Step 4: Simplify right side
    703,909.34x = 180,995,452,769.22
  5. Step 5: Solve for x
    x = 180,995,452,769.22/703,909.34
  6. Step 6: Final answer
    x = 257,128.93

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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.