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Finding the Fourth Proportional to 19,101.09, 28,610.10 and 11,683.11

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Solution

The fourth proportional to 19,101.09, 28,610.10 and 11,683.11 is: 17,499.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,101.09 : 28,610.10 = 11,683.11 : x
  2. Step 2: Convert to fraction form
    19,101.09/28,610.10 = 11,683.11/x
  3. Step 3: Cross multiply
    19,101.09x = 28,610.10 × 11,683.11
  4. Step 4: Simplify right side
    19,101.09x = 334,254,945.41
  5. Step 5: Solve for x
    x = 334,254,945.41/19,101.09
  6. Step 6: Final answer
    x = 17,499.26

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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.