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Finding the Fourth Proportional to 529,309.12, 793,844 and 155,361.28

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Solution

The fourth proportional to 529,309.12, 793,844 and 155,361.28 is: 233,006.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,309.12 : 793,844 = 155,361.28 : x
  2. Step 2: Convert to fraction form
    529,309.12/793,844 = 155,361.28/x
  3. Step 3: Cross multiply
    529,309.12x = 793,844 × 155,361.28
  4. Step 4: Simplify right side
    529,309.12x = 123,332,619,960.32
  5. Step 5: Solve for x
    x = 123,332,619,960.32/529,309.12
  6. Step 6: Final answer
    x = 233,006.79

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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.