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Finding the Fourth Proportional to 575,843.31, 863,816.81 and 155,109.87

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Solution

The fourth proportional to 575,843.31, 863,816.81 and 155,109.87 is: 232,678.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,843.31 : 863,816.81 = 155,109.87 : x
  2. Step 2: Convert to fraction form
    575,843.31/863,816.81 = 155,109.87/x
  3. Step 3: Cross multiply
    575,843.31x = 863,816.81 × 155,109.87
  4. Step 4: Simplify right side
    575,843.31x = 133,986,512,327.37
  5. Step 5: Solve for x
    x = 133,986,512,327.37/575,843.31
  6. Step 6: Final answer
    x = 232,678.77

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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.