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Finding the Fourth Proportional to 61,731.78, 85,189.75 and 33,437.44

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Solution

The fourth proportional to 61,731.78, 85,189.75 and 33,437.44 is: 46,143.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,731.78 : 85,189.75 = 33,437.44 : x
  2. Step 2: Convert to fraction form
    61,731.78/85,189.75 = 33,437.44/x
  3. Step 3: Cross multiply
    61,731.78x = 85,189.75 × 33,437.44
  4. Step 4: Simplify right side
    61,731.78x = 2,848,527,154.24
  5. Step 5: Solve for x
    x = 2,848,527,154.24/61,731.78
  6. Step 6: Final answer
    x = 46,143.61

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1.5x scale

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.