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Finding the Fourth Proportional to 186,498.05, 279,746.81 and 86,603.61

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Solution

The fourth proportional to 186,498.05, 279,746.81 and 86,603.61 is: 129,905.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,498.05 : 279,746.81 = 86,603.61 : x
  2. Step 2: Convert to fraction form
    186,498.05/279,746.81 = 86,603.61/x
  3. Step 3: Cross multiply
    186,498.05x = 279,746.81 × 86,603.61
  4. Step 4: Simplify right side
    186,498.05x = 24,227,083,198.97
  5. Step 5: Solve for x
    x = 24,227,083,198.97/186,498.05
  6. Step 6: Final answer
    x = 129,905.29

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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.