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Finding the Fourth Proportional to 35,410.56, 48,866.04 and 21,080.40

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Solution

The fourth proportional to 35,410.56, 48,866.04 and 21,080.40 is: 29,090.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,410.56 : 48,866.04 = 21,080.40 : x
  2. Step 2: Convert to fraction form
    35,410.56/48,866.04 = 21,080.40/x
  3. Step 3: Cross multiply
    35,410.56x = 48,866.04 × 21,080.40
  4. Step 4: Simplify right side
    35,410.56x = 1,030,115,669.62
  5. Step 5: Solve for x
    x = 1,030,115,669.62/35,410.56
  6. Step 6: Final answer
    x = 29,090.63

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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.