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Finding the Fourth Proportional to 66,422.47, 99,193.44 and 58,374.31

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Solution

The fourth proportional to 66,422.47, 99,193.44 and 58,374.31 is: 87,174.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,422.47 : 99,193.44 = 58,374.31 : x
  2. Step 2: Convert to fraction form
    66,422.47/99,193.44 = 58,374.31/x
  3. Step 3: Cross multiply
    66,422.47x = 99,193.44 × 58,374.31
  4. Step 4: Simplify right side
    66,422.47x = 5,790,348,616.53
  5. Step 5: Solve for x
    x = 5,790,348,616.53/66,422.47
  6. Step 6: Final answer
    x = 87,174.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.