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Finding the Fourth Proportional to 313,321.01, 432,383.54 and 170,081.15

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Solution

The fourth proportional to 313,321.01, 432,383.54 and 170,081.15 is: 234,712.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,321.01 : 432,383.54 = 170,081.15 : x
  2. Step 2: Convert to fraction form
    313,321.01/432,383.54 = 170,081.15/x
  3. Step 3: Cross multiply
    313,321.01x = 432,383.54 × 170,081.15
  4. Step 4: Simplify right side
    313,321.01x = 73,540,286,711.95
  5. Step 5: Solve for x
    x = 73,540,286,711.95/313,321.01
  6. Step 6: Final answer
    x = 234,712.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.