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Finding the Fourth Proportional to 66,644.48, 91,874.08 and 41,133.76

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Solution

The fourth proportional to 66,644.48, 91,874.08 and 41,133.76 is: 56,705.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,644.48 : 91,874.08 = 41,133.76 : x
  2. Step 2: Convert to fraction form
    66,644.48/91,874.08 = 41,133.76/x
  3. Step 3: Cross multiply
    66,644.48x = 91,874.08 × 41,133.76
  4. Step 4: Simplify right side
    66,644.48x = 3,779,126,356.94
  5. Step 5: Solve for x
    x = 3,779,126,356.94/66,644.48
  6. Step 6: Final answer
    x = 56,705.77

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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.