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Finding the Fourth Proportional to 135,860.89, 203,725.80 and 56,953.93

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Solution

The fourth proportional to 135,860.89, 203,725.80 and 56,953.93 is: 85,403.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,860.89 : 203,725.80 = 56,953.93 : x
  2. Step 2: Convert to fraction form
    135,860.89/203,725.80 = 56,953.93/x
  3. Step 3: Cross multiply
    135,860.89x = 203,725.80 × 56,953.93
  4. Step 4: Simplify right side
    135,860.89x = 11,602,984,952.39
  5. Step 5: Solve for x
    x = 11,602,984,952.39/135,860.89
  6. Step 6: Final answer
    x = 85,403.42

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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.