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Finding the Fourth Proportional to 112,188.81, 154,821 and 61,202.63

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Solution

The fourth proportional to 112,188.81, 154,821 and 61,202.63 is: 84,459.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,188.81 : 154,821 = 61,202.63 : x
  2. Step 2: Convert to fraction form
    112,188.81/154,821 = 61,202.63/x
  3. Step 3: Cross multiply
    112,188.81x = 154,821 × 61,202.63
  4. Step 4: Simplify right side
    112,188.81x = 9,475,451,605.13
  5. Step 5: Solve for x
    x = 9,475,451,605.13/112,188.81
  6. Step 6: Final answer
    x = 84,459.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.