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Finding the Fourth Proportional to 64,890.25, 89,548.68 and 35,082.25

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Solution

The fourth proportional to 64,890.25, 89,548.68 and 35,082.25 is: 48,413.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,890.25 : 89,548.68 = 35,082.25 : x
  2. Step 2: Convert to fraction form
    64,890.25/89,548.68 = 35,082.25/x
  3. Step 3: Cross multiply
    64,890.25x = 89,548.68 × 35,082.25
  4. Step 4: Simplify right side
    64,890.25x = 3,141,569,178.93
  5. Step 5: Solve for x
    x = 3,141,569,178.93/64,890.25
  6. Step 6: Final answer
    x = 48,413.58

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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.