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Finding the Fourth Proportional to 188,606.21, 260,271.36 and 103,723.34

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Solution

The fourth proportional to 188,606.21, 260,271.36 and 103,723.34 is: 143,135.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,606.21 : 260,271.36 = 103,723.34 : x
  2. Step 2: Convert to fraction form
    188,606.21/260,271.36 = 103,723.34/x
  3. Step 3: Cross multiply
    188,606.21x = 260,271.36 × 103,723.34
  4. Step 4: Simplify right side
    188,606.21x = 26,996,213,464.19
  5. Step 5: Solve for x
    x = 26,996,213,464.19/188,606.21
  6. Step 6: Final answer
    x = 143,135.34

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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.