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Finding the Fourth Proportional to 8,461.70, 12,692.55 and 5,999.30

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Solution

The fourth proportional to 8,461.70, 12,692.55 and 5,999.30 is: 8,998.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,461.70 : 12,692.55 = 5,999.30 : x
  2. Step 2: Convert to fraction form
    8,461.70/12,692.55 = 5,999.30/x
  3. Step 3: Cross multiply
    8,461.70x = 12,692.55 × 5,999.30
  4. Step 4: Simplify right side
    8,461.70x = 76,146,415.22
  5. Step 5: Solve for x
    x = 76,146,415.22/8,461.70
  6. Step 6: Final answer
    x = 8,998.95

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Half scale
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Double scale
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Similar ratio
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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.