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Finding the Fourth Proportional to 85,091.34, 127,650.88 and 25,125.88

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Solution

The fourth proportional to 85,091.34, 127,650.88 and 25,125.88 is: 37,692.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,091.34 : 127,650.88 = 25,125.88 : x
  2. Step 2: Convert to fraction form
    85,091.34/127,650.88 = 25,125.88/x
  3. Step 3: Cross multiply
    85,091.34x = 127,650.88 × 25,125.88
  4. Step 4: Simplify right side
    85,091.34x = 3,207,340,692.77
  5. Step 5: Solve for x
    x = 3,207,340,692.77/85,091.34
  6. Step 6: Final answer
    x = 37,692.92

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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.