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Finding the Fourth Proportional to 111,570.64, 153,913.44 and 73,876.48

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Solution

The fourth proportional to 111,570.64, 153,913.44 and 73,876.48 is: 101,913.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,570.64 : 153,913.44 = 73,876.48 : x
  2. Step 2: Convert to fraction form
    111,570.64/153,913.44 = 73,876.48/x
  3. Step 3: Cross multiply
    111,570.64x = 153,913.44 × 73,876.48
  4. Step 4: Simplify right side
    111,570.64x = 11,370,583,171.89
  5. Step 5: Solve for x
    x = 11,370,583,171.89/111,570.64
  6. Step 6: Final answer
    x = 101,913.76

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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.