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Finding the Fourth Proportional to 323,175.90, 484,788.15 and 86,513.34

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Solution

The fourth proportional to 323,175.90, 484,788.15 and 86,513.34 is: 129,776.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,175.90 : 484,788.15 = 86,513.34 : x
  2. Step 2: Convert to fraction form
    323,175.90/484,788.15 = 86,513.34/x
  3. Step 3: Cross multiply
    323,175.90x = 484,788.15 × 86,513.34
  4. Step 4: Simplify right side
    323,175.90x = 41,940,642,048.92
  5. Step 5: Solve for x
    x = 41,940,642,048.92/323,175.90
  6. Step 6: Final answer
    x = 129,776.52

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1.5x scale

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.