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Finding the Fourth Proportional to 189,326.84, 261,266.82 and 104,443.88

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Solution

The fourth proportional to 189,326.84, 261,266.82 and 104,443.88 is: 144,130.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,326.84 : 261,266.82 = 104,443.88 : x
  2. Step 2: Convert to fraction form
    189,326.84/261,266.82 = 104,443.88/x
  3. Step 3: Cross multiply
    189,326.84x = 261,266.82 × 104,443.88
  4. Step 4: Simplify right side
    189,326.84x = 27,287,719,089.73
  5. Step 5: Solve for x
    x = 27,287,719,089.73/189,326.84
  6. Step 6: Final answer
    x = 144,130.22

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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.