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Finding the Fourth Proportional to 64,794.52, 89,433.14 and 42,189.99

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Solution

The fourth proportional to 64,794.52, 89,433.14 and 42,189.99 is: 58,233.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,794.52 : 89,433.14 = 42,189.99 : x
  2. Step 2: Convert to fraction form
    64,794.52/89,433.14 = 42,189.99/x
  3. Step 3: Cross multiply
    64,794.52x = 89,433.14 × 42,189.99
  4. Step 4: Simplify right side
    64,794.52x = 3,773,183,282.27
  5. Step 5: Solve for x
    x = 3,773,183,282.27/64,794.52
  6. Step 6: Final answer
    x = 58,233.06

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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.