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Finding the Fourth Proportional to 111,994.32, 154,552.14 and 61,693.32

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Solution

The fourth proportional to 111,994.32, 154,552.14 and 61,693.32 is: 85,136.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,994.32 : 154,552.14 = 61,693.32 : x
  2. Step 2: Convert to fraction form
    111,994.32/154,552.14 = 61,693.32/x
  3. Step 3: Cross multiply
    111,994.32x = 154,552.14 × 61,693.32
  4. Step 4: Simplify right side
    111,994.32x = 9,534,834,629.70
  5. Step 5: Solve for x
    x = 9,534,834,629.70/111,994.32
  6. Step 6: Final answer
    x = 85,136.77

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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.