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Finding the Fourth Proportional to 64,803.38, 89,428.66 and 34,995.38

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Solution

The fourth proportional to 64,803.38, 89,428.66 and 34,995.38 is: 48,293.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,803.38 : 89,428.66 = 34,995.38 : x
  2. Step 2: Convert to fraction form
    64,803.38/89,428.66 = 34,995.38/x
  3. Step 3: Cross multiply
    64,803.38x = 89,428.66 × 34,995.38
  4. Step 4: Simplify right side
    64,803.38x = 3,129,589,404.96
  5. Step 5: Solve for x
    x = 3,129,589,404.96/64,803.38
  6. Step 6: Final answer
    x = 48,293.62

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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.