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Finding the Fourth Proportional to 545,978.39, 819,084.22 and 191,003.99

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Solution

The fourth proportional to 545,978.39, 819,084.22 and 191,003.99 is: 286,546.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,978.39 : 819,084.22 = 191,003.99 : x
  2. Step 2: Convert to fraction form
    545,978.39/819,084.22 = 191,003.99/x
  3. Step 3: Cross multiply
    545,978.39x = 819,084.22 × 191,003.99
  4. Step 4: Simplify right side
    545,978.39x = 156,448,349,593.11
  5. Step 5: Solve for x
    x = 156,448,349,593.11/545,978.39
  6. Step 6: Final answer
    x = 286,546.78

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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.