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Finding the Fourth Proportional to 98,652, 136,143.12 and 53,942.88

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Solution

The fourth proportional to 98,652, 136,143.12 and 53,942.88 is: 74,443.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,652 : 136,143.12 = 53,942.88 : x
  2. Step 2: Convert to fraction form
    98,652/136,143.12 = 53,942.88/x
  3. Step 3: Cross multiply
    98,652x = 136,143.12 × 53,942.88
  4. Step 4: Simplify right side
    98,652x = 7,343,951,984.99
  5. Step 5: Solve for x
    x = 7,343,951,984.99/98,652
  6. Step 6: Final answer
    x = 74,443.01

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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.