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Finding the Fourth Proportional to 19,978,887.38, 27,570,864.60 and 10,811,530.13

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Solution

The fourth proportional to 19,978,887.38, 27,570,864.60 and 10,811,530.13 is: 14,919,911.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,978,887.38 : 27,570,864.60 = 10,811,530.13 : x
  2. Step 2: Convert to fraction form
    19,978,887.38/27,570,864.60 = 10,811,530.13/x
  3. Step 3: Cross multiply
    19,978,887.38x = 27,570,864.60 × 10,811,530.13
  4. Step 4: Simplify right side
    19,978,887.38x = 298,083,233,195,196.06
  5. Step 5: Solve for x
    x = 298,083,233,195,196.06/19,978,887.38
  6. Step 6: Final answer
    x = 14,919,911.58

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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.