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Finding the Fourth Proportional to 316,326.20, 436,537.22 and 173,086.20

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Solution

The fourth proportional to 316,326.20, 436,537.22 and 173,086.20 is: 238,862.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,326.20 : 436,537.22 = 173,086.20 : x
  2. Step 2: Convert to fraction form
    316,326.20/436,537.22 = 173,086.20/x
  3. Step 3: Cross multiply
    316,326.20x = 436,537.22 × 173,086.20
  4. Step 4: Simplify right side
    316,326.20x = 75,558,567,702.93
  5. Step 5: Solve for x
    x = 75,558,567,702.93/316,326.20
  6. Step 6: Final answer
    x = 238,862.82

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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.