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Finding the Fourth Proportional to 8,761.01, 12,090.11 and 4,782.09

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Solution

The fourth proportional to 8,761.01, 12,090.11 and 4,782.09 is: 6,599.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.01 : 12,090.11 = 4,782.09 : x
  2. Step 2: Convert to fraction form
    8,761.01/12,090.11 = 4,782.09/x
  3. Step 3: Cross multiply
    8,761.01x = 12,090.11 × 4,782.09
  4. Step 4: Simplify right side
    8,761.01x = 57,815,970.22
  5. Step 5: Solve for x
    x = 57,815,970.22/8,761.01
  6. Step 6: Final answer
    x = 6,599.23

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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.