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Finding the Fourth Proportional to 13,059.30, 18,021.84 and 7,090.95

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Solution

The fourth proportional to 13,059.30, 18,021.84 and 7,090.95 is: 9,785.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,059.30 : 18,021.84 = 7,090.95 : x
  2. Step 2: Convert to fraction form
    13,059.30/18,021.84 = 7,090.95/x
  3. Step 3: Cross multiply
    13,059.30x = 18,021.84 × 7,090.95
  4. Step 4: Simplify right side
    13,059.30x = 127,791,966.35
  5. Step 5: Solve for x
    x = 127,791,966.35/13,059.30
  6. Step 6: Final answer
    x = 9,785.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.