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Finding the Fourth Proportional to 316,342.86, 436,553.19 and 173,102.87

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Solution

The fourth proportional to 316,342.86, 436,553.19 and 173,102.87 is: 238,881.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,342.86 : 436,553.19 = 173,102.87 : x
  2. Step 2: Convert to fraction form
    316,342.86/436,553.19 = 173,102.87/x
  3. Step 3: Cross multiply
    316,342.86x = 436,553.19 × 173,102.87
  4. Step 4: Simplify right side
    316,342.86x = 75,568,607,913.89
  5. Step 5: Solve for x
    x = 75,568,607,913.89/316,342.86
  6. Step 6: Final answer
    x = 238,881.98

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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.