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Finding the Fourth Proportional to 11,385.60, 17,080.64 and 3,594.88

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Solution

The fourth proportional to 11,385.60, 17,080.64 and 3,594.88 is: 5,393.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.60 : 17,080.64 = 3,594.88 : x
  2. Step 2: Convert to fraction form
    11,385.60/17,080.64 = 3,594.88/x
  3. Step 3: Cross multiply
    11,385.60x = 17,080.64 × 3,594.88
  4. Step 4: Simplify right side
    11,385.60x = 61,402,851.12
  5. Step 5: Solve for x
    x = 61,402,851.12/11,385.60
  6. Step 6: Final answer
    x = 5,393.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.