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Finding the Fourth Proportional to 8,692.50, 11,995.57 and 4,916.40

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Solution

The fourth proportional to 8,692.50, 11,995.57 and 4,916.40 is: 6,784.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.50 : 11,995.57 = 4,916.40 : x
  2. Step 2: Convert to fraction form
    8,692.50/11,995.57 = 4,916.40/x
  3. Step 3: Cross multiply
    8,692.50x = 11,995.57 × 4,916.40
  4. Step 4: Simplify right side
    8,692.50x = 58,975,020.35
  5. Step 5: Solve for x
    x = 58,975,020.35/8,692.50
  6. Step 6: Final answer
    x = 6,784.59

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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.