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Finding the Fourth Proportional to 29,086.36, 40,139.16 and 16,511.11

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Solution

The fourth proportional to 29,086.36, 40,139.16 and 16,511.11 is: 22,785.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,086.36 : 40,139.16 = 16,511.11 : x
  2. Step 2: Convert to fraction form
    29,086.36/40,139.16 = 16,511.11/x
  3. Step 3: Cross multiply
    29,086.36x = 40,139.16 × 16,511.11
  4. Step 4: Simplify right side
    29,086.36x = 662,742,074.32
  5. Step 5: Solve for x
    x = 662,742,074.32/29,086.36
  6. Step 6: Final answer
    x = 22,785.32

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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.