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Finding the Fourth Proportional to 387,553.22, 581,292.24 and 117,683.70

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Solution

The fourth proportional to 387,553.22, 581,292.24 and 117,683.70 is: 176,514.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,553.22 : 581,292.24 = 117,683.70 : x
  2. Step 2: Convert to fraction form
    387,553.22/581,292.24 = 117,683.70/x
  3. Step 3: Cross multiply
    387,553.22x = 581,292.24 × 117,683.70
  4. Step 4: Simplify right side
    387,553.22x = 68,408,618,383.82
  5. Step 5: Solve for x
    x = 68,408,618,383.82/387,553.22
  6. Step 6: Final answer
    x = 176,514.13

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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.