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Finding the Fourth Proportional to 64,979.15, 97,480.87 and 20,593.98

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Solution

The fourth proportional to 64,979.15, 97,480.87 and 20,593.98 is: 30,894.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,979.15 : 97,480.87 = 20,593.98 : x
  2. Step 2: Convert to fraction form
    64,979.15/97,480.87 = 20,593.98/x
  3. Step 3: Cross multiply
    64,979.15x = 97,480.87 × 20,593.98
  4. Step 4: Simplify right side
    64,979.15x = 2,007,519,087.16
  5. Step 5: Solve for x
    x = 2,007,519,087.16/64,979.15
  6. Step 6: Final answer
    x = 30,894.82

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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.