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Finding the Fourth Proportional to 919,161, 1,268,442.18 and 516,755.88

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Solution

The fourth proportional to 919,161, 1,268,442.18 and 516,755.88 is: 713,123.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,161 : 1,268,442.18 = 516,755.88 : x
  2. Step 2: Convert to fraction form
    919,161/1,268,442.18 = 516,755.88/x
  3. Step 3: Cross multiply
    919,161x = 1,268,442.18 × 516,755.88
  4. Step 4: Simplify right side
    919,161x = 655,474,954,955.02
  5. Step 5: Solve for x
    x = 655,474,954,955.02/919,161
  6. Step 6: Final answer
    x = 713,123.11

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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.