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Finding the Fourth Proportional to 111,893.96, 154,409.10 and 64,114.08

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Solution

The fourth proportional to 111,893.96, 154,409.10 and 64,114.08 is: 88,474.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,893.96 : 154,409.10 = 64,114.08 : x
  2. Step 2: Convert to fraction form
    111,893.96/154,409.10 = 64,114.08/x
  3. Step 3: Cross multiply
    111,893.96x = 154,409.10 × 64,114.08
  4. Step 4: Simplify right side
    111,893.96x = 9,899,797,390.13
  5. Step 5: Solve for x
    x = 9,899,797,390.13/111,893.96
  6. Step 6: Final answer
    x = 88,474.81

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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.