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Finding the Fourth Proportional to 85,289.38, 127,932.33 and 37,891.63

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Solution

The fourth proportional to 85,289.38, 127,932.33 and 37,891.63 is: 56,836.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,289.38 : 127,932.33 = 37,891.63 : x
  2. Step 2: Convert to fraction form
    85,289.38/127,932.33 = 37,891.63/x
  3. Step 3: Cross multiply
    85,289.38x = 127,932.33 × 37,891.63
  4. Step 4: Simplify right side
    85,289.38x = 4,847,563,776.08
  5. Step 5: Solve for x
    x = 4,847,563,776.08/85,289.38
  6. Step 6: Final answer
    x = 56,836.66

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1.5x scale

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.