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Finding the Fourth Proportional to 316,543.26, 436,813.11 and 173,275.86

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Solution

The fourth proportional to 316,543.26, 436,813.11 and 173,275.86 is: 239,111.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,543.26 : 436,813.11 = 173,275.86 : x
  2. Step 2: Convert to fraction form
    316,543.26/436,813.11 = 173,275.86/x
  3. Step 3: Cross multiply
    316,543.26x = 436,813.11 × 173,275.86
  4. Step 4: Simplify right side
    316,543.26x = 75,689,167,294.52
  5. Step 5: Solve for x
    x = 75,689,167,294.52/316,543.26
  6. Step 6: Final answer
    x = 239,111.61

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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.