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Finding the Fourth Proportional to 188,904.34, 260,689.89 and 104,021.74

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Solution

The fourth proportional to 188,904.34, 260,689.89 and 104,021.74 is: 143,551.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,904.34 : 260,689.89 = 104,021.74 : x
  2. Step 2: Convert to fraction form
    188,904.34/260,689.89 = 104,021.74/x
  3. Step 3: Cross multiply
    188,904.34x = 260,689.89 × 104,021.74
  4. Step 4: Simplify right side
    188,904.34x = 27,117,415,958.21
  5. Step 5: Solve for x
    x = 27,117,415,958.21/188,904.34
  6. Step 6: Final answer
    x = 143,551.05

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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.