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Finding the Fourth Proportional to 8,761.88, 12,090.94 and 4,782.22

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Solution

The fourth proportional to 8,761.88, 12,090.94 and 4,782.22 is: 6,599.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.88 : 12,090.94 = 4,782.22 : x
  2. Step 2: Convert to fraction form
    8,761.88/12,090.94 = 4,782.22/x
  3. Step 3: Cross multiply
    8,761.88x = 12,090.94 × 4,782.22
  4. Step 4: Simplify right side
    8,761.88x = 57,821,538.24
  5. Step 5: Solve for x
    x = 57,821,538.24/8,761.88
  6. Step 6: Final answer
    x = 6,599.21

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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.