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Finding the Fourth Proportional to 591,088.86, 886,471.76 and 211,939.20

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Solution

The fourth proportional to 591,088.86, 886,471.76 and 211,939.20 is: 317,850.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,088.86 : 886,471.76 = 211,939.20 : x
  2. Step 2: Convert to fraction form
    591,088.86/886,471.76 = 211,939.20/x
  3. Step 3: Cross multiply
    591,088.86x = 886,471.76 × 211,939.20
  4. Step 4: Simplify right side
    591,088.86x = 187,878,116,166.84
  5. Step 5: Solve for x
    x = 187,878,116,166.84/591,088.86
  6. Step 6: Final answer
    x = 317,850.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.