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Finding the Fourth Proportional to 112,372, 155,073.38 and 62,074.24

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Solution

The fourth proportional to 112,372, 155,073.38 and 62,074.24 is: 85,662.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,372 : 155,073.38 = 62,074.24 : x
  2. Step 2: Convert to fraction form
    112,372/155,073.38 = 62,074.24/x
  3. Step 3: Cross multiply
    112,372x = 155,073.38 × 62,074.24
  4. Step 4: Simplify right side
    112,372x = 9,626,062,207.73
  5. Step 5: Solve for x
    x = 9,626,062,207.73/112,372
  6. Step 6: Final answer
    x = 85,662.46

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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.