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Finding the Fourth Proportional to 8,762.82, 12,092.40 and 5,224.20

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Solution

The fourth proportional to 8,762.82, 12,092.40 and 5,224.20 is: 7,209.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.82 : 12,092.40 = 5,224.20 : x
  2. Step 2: Convert to fraction form
    8,762.82/12,092.40 = 5,224.20/x
  3. Step 3: Cross multiply
    8,762.82x = 12,092.40 × 5,224.20
  4. Step 4: Simplify right side
    8,762.82x = 63,173,116.08
  5. Step 5: Solve for x
    x = 63,173,116.08/8,762.82
  6. Step 6: Final answer
    x = 7,209.22

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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.