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Finding the Fourth Proportional to 66,603.86, 99,905.79 and 27,164.06

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Solution

The fourth proportional to 66,603.86, 99,905.79 and 27,164.06 is: 40,746.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,603.86 : 99,905.79 = 27,164.06 : x
  2. Step 2: Convert to fraction form
    66,603.86/99,905.79 = 27,164.06/x
  3. Step 3: Cross multiply
    66,603.86x = 99,905.79 × 27,164.06
  4. Step 4: Simplify right side
    66,603.86x = 2,713,846,374.38
  5. Step 5: Solve for x
    x = 2,713,846,374.38/66,603.86
  6. Step 6: Final answer
    x = 40,746.09

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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.