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Finding the Fourth Proportional to 319,504.30, 440,917.43 and 176,264.30

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Solution

The fourth proportional to 319,504.30, 440,917.43 and 176,264.30 is: 243,245.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,504.30 : 440,917.43 = 176,264.30 : x
  2. Step 2: Convert to fraction form
    319,504.30/440,917.43 = 176,264.30/x
  3. Step 3: Cross multiply
    319,504.30x = 440,917.43 × 176,264.30
  4. Step 4: Simplify right side
    319,504.30x = 77,718,002,377.72
  5. Step 5: Solve for x
    x = 77,718,002,377.72/319,504.30
  6. Step 6: Final answer
    x = 243,245.56

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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.