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Finding the Fourth Proportional to 66,469.63, 91,676.22 and 42,598.51

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Solution

The fourth proportional to 66,469.63, 91,676.22 and 42,598.51 is: 58,752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,469.63 : 91,676.22 = 42,598.51 : x
  2. Step 2: Convert to fraction form
    66,469.63/91,676.22 = 42,598.51/x
  3. Step 3: Cross multiply
    66,469.63x = 91,676.22 × 42,598.51
  4. Step 4: Simplify right side
    66,469.63x = 3,905,270,374.43
  5. Step 5: Solve for x
    x = 3,905,270,374.43/66,469.63
  6. Step 6: Final answer
    x = 58,752.70

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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.