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Finding the Fourth Proportional to 319,705.40, 441,204.15 and 174,519.80

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Solution

The fourth proportional to 319,705.40, 441,204.15 and 174,519.80 is: 240,843.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,705.40 : 441,204.15 = 174,519.80 : x
  2. Step 2: Convert to fraction form
    319,705.40/441,204.15 = 174,519.80/x
  3. Step 3: Cross multiply
    319,705.40x = 441,204.15 × 174,519.80
  4. Step 4: Simplify right side
    319,705.40x = 76,998,857,811.15
  5. Step 5: Solve for x
    x = 76,998,857,811.15/319,705.40
  6. Step 6: Final answer
    x = 240,843.16

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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.