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Finding the Fourth Proportional to 8,692.21, 11,988.10 and 5,332.67

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Solution

The fourth proportional to 8,692.21, 11,988.10 and 5,332.67 is: 7,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.21 : 11,988.10 = 5,332.67 : x
  2. Step 2: Convert to fraction form
    8,692.21/11,988.10 = 5,332.67/x
  3. Step 3: Cross multiply
    8,692.21x = 11,988.10 × 5,332.67
  4. Step 4: Simplify right side
    8,692.21x = 63,928,572.91
  5. Step 5: Solve for x
    x = 63,928,572.91/8,692.21
  6. Step 6: Final answer
    x = 7,354.70

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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.