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Finding the Fourth Proportional to 111,351.52, 153,664.08 and 61,049.44

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Solution

The fourth proportional to 111,351.52, 153,664.08 and 61,049.44 is: 84,247.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,351.52 : 153,664.08 = 61,049.44 : x
  2. Step 2: Convert to fraction form
    111,351.52/153,664.08 = 61,049.44/x
  3. Step 3: Cross multiply
    111,351.52x = 153,664.08 × 61,049.44
  4. Step 4: Simplify right side
    111,351.52x = 9,381,106,032.12
  5. Step 5: Solve for x
    x = 9,381,106,032.12/111,351.52
  6. Step 6: Final answer
    x = 84,247.67

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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.