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Finding the Fourth Proportional to 111,958.32, 154,509.51 and 61,657.32

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Solution

The fourth proportional to 111,958.32, 154,509.51 and 61,657.32 is: 85,090.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,958.32 : 154,509.51 = 61,657.32 : x
  2. Step 2: Convert to fraction form
    111,958.32/154,509.51 = 61,657.32/x
  3. Step 3: Cross multiply
    111,958.32x = 154,509.51 × 61,657.32
  4. Step 4: Simplify right side
    111,958.32x = 9,526,642,301.11
  5. Step 5: Solve for x
    x = 9,526,642,301.11/111,958.32
  6. Step 6: Final answer
    x = 85,090.97

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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.