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Finding the Fourth Proportional to 12,649.47, 17,455.64 and 7,059.39

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Solution

The fourth proportional to 12,649.47, 17,455.64 and 7,059.39 is: 9,741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,649.47 : 17,455.64 = 7,059.39 : x
  2. Step 2: Convert to fraction form
    12,649.47/17,455.64 = 7,059.39/x
  3. Step 3: Cross multiply
    12,649.47x = 17,455.64 × 7,059.39
  4. Step 4: Simplify right side
    12,649.47x = 123,226,135.16
  5. Step 5: Solve for x
    x = 123,226,135.16/12,649.47
  6. Step 6: Final answer
    x = 9,741.60

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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.