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Finding the Fourth Proportional to 55,393.37, 83,082.76 and 15,415.01

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Solution

The fourth proportional to 55,393.37, 83,082.76 and 15,415.01 is: 23,120.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,393.37 : 83,082.76 = 15,415.01 : x
  2. Step 2: Convert to fraction form
    55,393.37/83,082.76 = 15,415.01/x
  3. Step 3: Cross multiply
    55,393.37x = 83,082.76 × 15,415.01
  4. Step 4: Simplify right side
    55,393.37x = 1,280,721,122.28
  5. Step 5: Solve for x
    x = 1,280,721,122.28/55,393.37
  6. Step 6: Final answer
    x = 23,120.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.