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Finding the Fourth Proportional to 395,943.40, 594,051.10 and 115,501.80

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Solution

The fourth proportional to 395,943.40, 594,051.10 and 115,501.80 is: 173,292.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,943.40 : 594,051.10 = 115,501.80 : x
  2. Step 2: Convert to fraction form
    395,943.40/594,051.10 = 115,501.80/x
  3. Step 3: Cross multiply
    395,943.40x = 594,051.10 × 115,501.80
  4. Step 4: Simplify right side
    395,943.40x = 68,613,971,341.98
  5. Step 5: Solve for x
    x = 68,613,971,341.98/395,943.40
  6. Step 6: Final answer
    x = 173,292.37

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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.