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Finding the Fourth Proportional to 15,287.60, 21,097.86 and 9,996.68

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Solution

The fourth proportional to 15,287.60, 21,097.86 and 9,996.68 is: 13,796.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.60 : 21,097.86 = 9,996.68 : x
  2. Step 2: Convert to fraction form
    15,287.60/21,097.86 = 9,996.68/x
  3. Step 3: Cross multiply
    15,287.60x = 21,097.86 × 9,996.68
  4. Step 4: Simplify right side
    15,287.60x = 210,908,555.10
  5. Step 5: Solve for x
    x = 210,908,555.10/15,287.60
  6. Step 6: Final answer
    x = 13,796.05

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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.