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Finding the Fourth Proportional to 135,858.89, 203,722.79 and 56,951.93

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Solution

The fourth proportional to 135,858.89, 203,722.79 and 56,951.93 is: 85,400.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,858.89 : 203,722.79 = 56,951.93 : x
  2. Step 2: Convert to fraction form
    135,858.89/203,722.79 = 56,951.93/x
  3. Step 3: Cross multiply
    135,858.89x = 203,722.79 × 56,951.93
  4. Step 4: Simplify right side
    135,858.89x = 11,602,406,075.48
  5. Step 5: Solve for x
    x = 11,602,406,075.48/135,858.89
  6. Step 6: Final answer
    x = 85,400.42

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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.