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Finding the Fourth Proportional to 319,553.88, 440,984.28 and 176,314.20

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Solution

The fourth proportional to 319,553.88, 440,984.28 and 176,314.20 is: 243,313.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,553.88 : 440,984.28 = 176,314.20 : x
  2. Step 2: Convert to fraction form
    319,553.88/440,984.28 = 176,314.20/x
  3. Step 3: Cross multiply
    319,553.88x = 440,984.28 × 176,314.20
  4. Step 4: Simplify right side
    319,553.88x = 77,751,790,540.78
  5. Step 5: Solve for x
    x = 77,751,790,540.78/319,553.88
  6. Step 6: Final answer
    x = 243,313.55

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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.